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Publications (68)

cond-mat.str-el2004

Hall-effect evolution across a heavy-fermion quantum critical point

S. Paschen, T. Luhmann, S. Wirth +6

A quantum critical point (QCP) develops in a material at absolute zero when a new form of order smoothly emerges in its ground state. QCPs are of great current interest because of…

cond-mat.str-el2013

Lifshitz transitions and quasiparticle de-renormalization in YbRh $_{2}$ Si $_{2}$

H. R. Naren, S. Friedemann, G. Zwicknagl +4

We study the effect of magnetic fields up to 15 T on the heavy fermion state of YbRh $_{2}$ Si $_{2}$ via Hall effect and magnetoresistance measurements down to 50 mK. Our data show anoma…

cond-mat.str-el2011

Nature of magnetic order in YbInNi4

T. Willers, N. Hollmann, S. Wirth +4

We have measured field and temperature dependent magnetization of YbInNi4 to elucidate the nature of the magnetic transition at 3 K. For small fields we find magnetic order as prev…

nucl-ex2007

Comparison of Isoscalar Vector Meson Production Cross Sections in Proton-Proton Collisions

TOF collaboration, M. Abdel-Bary, S. Abdel-Samad +37

The reaction $pp \to pp I ¨ $ was investigated with the TOF spectrometer, which is an external experiment at the accelerator COSY (Forschungszentrum JÃ¼lich, Germany). Total as we…

cond-mat.supr-con2022

CeCu $_{2}$ Si $_{2}$ and YbRh $_{2}$ Si $_{2}$ : Strange Cases of Heavy-Fermion Superconductivity

Z. Y. Shan, M. Smidman, O. Stockert +6

The heavy-fermion superconductor CeCu $_{2}$ Si $_{2}$ exhibits two-band, $d$ -wave superconductivity with a finite energy gap over the whole Fermi surface around the magnetic instabil…

cond-mat.supr-con2012

Routes to heavy-fermion superconductivity

F. Steglich, O. Stockert, S. Wirth +4

Superconductivity in lanthanide- and actinide-based heavy-fermion metals can have different microscopic origins. Among others, Cooper pair formation based on fluctuations of the va…

cond-mat.supr-con2017

Pressure-induced ferromagnetism due to an anisotropic electronic topological transition in Fe1.08Te

K. Mydeen, D. Kasinathan, C. Koz +8

A rapid and anisotropic modification of the Fermi-surface shape can be associated with abrupt changes in crystalline lattice geometry or in the magnetic state of a material. In thi…

cond-mat.str-el2014

Correlation between the phase diagram and the crystal-field wave functions of CeRh(1-x)Ir(x)In5

T. Willers, F. Strigari, Z. Hu +9

The 4f crystal-electric field ground state wave functions of CeRh(1-x)Ir(x)In5 have been determined by linear polarization dependent soft x-ray absorption spectroscopy (XAS) at T =…

cond-mat.str-el2022

Surface and electronic structure at atomic length scales of the non-symmorphic antiferromagnet Eu $_{5}$ In $_{2}$ Sb $_{6}$

M. Victoria Ale Crivillero, Sahana RÃ¶Ãler, Priscila F. S. Rosa +3

We performed Scanning Tunneling Microscopy and Spectroscopy (STM/STS) measurements to investigate the Zintl phase Eu $_{5}$ In $_{2}$ Sb $_{6}$ , a non-symmorphic antiferromagnet. The theoreti…

cond-mat.str-el2013

Hybridization gap and Fano resonance in SmB $_{6}$

S. RÃ¶Ãler, Tae-Hwan Jang, D. J. Kim +4

We present results of Scanning Tunneling Microscopy and Spectroscopy (STS) measurements on the "Kondo insulator" SmB $_{6}$ . The vast majority of surface areas investigated was recons…

cond-mat.str-el2003

Photoemission and x-ray absorption spectroscopy study of electron-doped colossal magnetoresistance manganite: La0.7Ce0.3MnO3 film

S. W. Han, J. -S. Kang, K. H. Kim +11

The electronic structure of La0.7Ce0.3MnO3 (LCeMO) thin film has been investigated using photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). The Ce 3d core-le…

cond-mat.mtrl-sci2023

Tuning the topological character of half-Heusler systems: A comparative study on Y $T$ Bi ( $T$ = Pd, Pt)

J. C. Souza, M. V. Ale Crivillero, H. Dawczak-DÄbicki +3

Half-Heusler systems host a plethora of different ground states, especially with non-trivial topology. However, there is still a lack of spectroscopic insight into the correspondin…

cond-mat.str-el2007

Polaronic state and nanometer-scale phase separation in colossal magnetoresistive manganites

Sahana Roessler, S. Ernst, B. Padmanabhan +4

High resolution topographic images obtained by scanning tunneling microscope in the insulating state of Pr0.68Pb0.32MnO3 single crystals showed regular stripe-like or zigzag patter…

nucl-ex1998

Total Cross Section of the Reaction pp \to pK^+ÎClose to Threshold

J. T. Balewski, A. Budzanowski, H. Dombrowski +31

The energy dependence of the total cross section for the pp \to pK^+Îreaction was measured in the threshold region covering the excess energy range up to 7MeV. Existing model calc…

cond-mat.str-el2021

The planar triangular $S = 3/2$ magnet AgCrSe $_{2}$ : magnetic frustration, short range correlations, and field tuned anisotropic cycloidal magnetic order

M. Baenitz, M. M. Piva, S. Luther +25

Our studies evidence an anisotropic magnetic order below $T_{N} = 32$ ~K. Susceptibility data in small fields of about 1~T reveal an antiferromagnetic (AFM) order for $H ⊥ c$ , whe…

cond-mat.str-el2012

Comment on "Zeeman-Driven Lifshitz Transition: A Model for the Experimentally Observed Fermi-Surface Reconstruction in YbRh2Si2"

S. Friedemann, S. Paschen, C. Geibel +5

In Phys. Rev. Lett. 106, 137002 (2011), A. Hackl and M. Vojta have proposed to explain the quantum critical behavior of YbRh2Si2 in terms of a Zeeman-induced Lifshitz transition of…

cond-mat.mtrl-sci2024

Coupling between magnetic and thermodynamic properties in $R$ Rh $_{2}$ Si $_{2}$ ( $R$ = Dy, Ho)

H. Dawczak-DÄbicki, Kristin Kliemt, M. Victoria Ale Crivillero +4

Single crystals of DyRh $_{2}$ Si $_{2}$ and HoRh $_{2}$ Si $_{2}$ were investigated by thermal expansion and magnetostriction. The different types of magnetic order can clearly be seen in these…

cond-mat.supr-con2022

Nuclear-order-induced quantum criticality and heavy-fermion superconductivity at ultra-low temperatures in YbRh $_{2}$ Si $_{2}$

Erwin Schuberth, S. Wirth, F. Steglich

The tetragonal heavy-fermion metal YbRh $_{2}$ Si $_{2}$ orders antiferromagnetically at $T_{N} = 70$ mK and exhibits an unconventional quantum critical point (QCP) of Kondo-destroyin…

cond-mat.str-el2002

Direct observation of electron doping in La0.7Ce0.3MnO3 using x-ray absorption spectroscopy

C. Mitra, Z. Hu, P. Raychaudhuri +6

We report on a X-ray absorption spectroscopic (XAS) study on a thin film of La0.7Ce0.3MnO3, a manganite which was previously only speculated to be an electron doped system. The mea…

cond-mat.mtrl-sci2020

Comparative Scanning Tunneling Microscopy Study on Hexaborides

S. Wirth, Sahana RÃ¶Ãler, Lin Jiao +3

We compare STM investigations on two hexaboride compounds, SmB $_{6}$ and EuB $_{6}$ , in an effort to provide a comprehensive picture of their surface structural properties. The latter i…

cond-mat.str-el2013

Thermal and Electrical Transport across a Magnetic Quantum Critical Point

H. Pfau, S. Hartmann, U. Stockert +11

A quantum critical point (QCP) arises at a continuous transition between competing phases at zero temperature. Collective excitations at magnetic QCPs give rise to metallic propert…

cond-mat.mes-hall2018

The inherently absent 2-dimensional electron gas in ultra-pure GaN/AlGaN heterostructures

S. Schmult, S. Wirth, V. V. Solovyev +5

Gallium nitride (GaN) has emerged as an essential semiconductor material for energy-efficient lighting and electronic applications owing to its large direct bandgap of 3.4 eV. Pres…

nucl-ex2006

Single-Pion Production in pp Collisions at =.95 GeV/c (I)

S Abd El-Samad, R. Bilger, K. -Th. Brinkmann +41

The single-pion production reactions $pp \to d I ¨ ^{+}$ , $pp \to n p I ¨ ^{+}$ and $pp \to pp I ¨ ^{0}$ were measured at a beam momentum of 0.95 GeV/c ( $T_{p} \approx$ 400 MeV) using the short version…

nucl-ex2009

Single-Pion Production in pp Collisions at 0.95 GeV/c (II)

S. Abd El-Samad, R. Bilger, K. Th. Brinkmann +41

cond-mat.str-el2010

Magnetism and superconductivity driven by identical 4 $f$ states in a heavy-fermion metal

Sunil Nair, O. Stockert, U. Witte +8

The apparently inimical relationship between magnetism and superconductivity has come under increasing scrutiny in a wide range of material classes, where the free energy landscape…

cond-mat.str-el2021

Surface excitations relaxation in the Kondo insulator Sm $_{1 - x}$ Gd $_{x}$ B $_{6}$

J. C. Souza, M. KÃ¶nig, M. V. Ale Crivillero +7

The interplay between non-trivial topological states of matter and strong electronic correlations is one of the most compelling open questions in condensed matter physics. Due to e…

nucl-ex2009

On the Production of $I ¨ ^{+} I ¨ ^{+}$ Pairs in pp Collisions at 0.8 GeV

S. Abd El-Samad, R. Bilger, K. -Th. Brinkmann +39

Data accumulated recently for the exclusive measurement of the $pp \to pp I ¨ ^{+} I ¨ ^{-}$ reaction at a beam energy of 0.793 GeV using the COSY-TOF spectrometer have been analyzed with res…

cond-mat.mtrl-sci2005

High spin polarization in the ferromagnetic filled skutterudites KFe4Sb12 and NaFe4Sb12

Goutam Sheet, H. Rosner, S. Wirth +6

The spin polarization of ferromagnetic alkali-metal iron antimonides KFe4Sb12 and NaFe4Sb12 is studied by point-contact Andreev reflection using superconducting Nb and Pb tips. Fro…

nucl-ex2010

Production of Lambda and Sigma^0 hyperons in proton-proton collisions

TOF Collaboration, M. Abdel-Bary, S. Abdel-Samad +62

This paper reports results on simultaneous measurements of the reaction channels pp -> pK+Îand pp -> pK+Î£^0 at excess energies of 204, 239, and 284 MeV (Î) and 127, 162, and 207…

cond-mat.str-el2008

The precursor state to superconductivity in CeIrIn $_{5}$ : Unusual scaling of magnetotransport

Sunil Nair, M. Nicklas, F. Steglich +4

We present an analysis of the normal-state Hall effect and magnetoresistance in the heavy fermion superconductor CeIrIn $_{5}$ . It is demonstrated that the modified Kohler's scaling…

cond-mat.supr-con2018

Interplay between unconventional superconductivity and heavy-fermion quantum criticality: CeCu $_{2}$ Si $_{2}$ versus YbRh $_{2}$ Si $_{2}$

M. Smidman, O. Stockert, J. Arndt +25

In this paper the low-temperature properties of two isostructural canonical heavy-fermion compounds are contrasted with regards to the interplay between antiferromagnetic (AF) quan…

cond-mat.supr-con2012

Pressure-induced phase transitions and high-pressure tetragonal phase of Fe1.08Te

C. Koz, S. RÃ¶Ãler, A. A. Tsirlin +6

We report the effects of hydrostatic pressure on the temperature-induced phase transitions in Fe1.08Te in the pressure range 0-3 GPa using synchrotron powder x-ray diffraction (XRD…

cond-mat.str-el2015

Surface and electronic structure of SmB $_{6}$ through Scanning Tunneling Microscopy

S. Roessler, Lin Jiao, D. -J. Kim +6

SmB $_{6}$ , a so called Kondo insulator, is recently discussed as a candidate material for a strong topological insulator. We present detailed atomically resolved topographic informat…

cond-mat.mtrl-sci2021

Phase stability in SmB $_{6}$

M. Victoria Ale Crivillero, Sahana RÃ¶Ãler, H. Borrmann +4

We investigate flux-grown Sm-deficient Sm $_{x}$ B $_{6}$ ( $x < 1$ ) by global and local tools, including X-ray diffraction (XRD), electronic transport, and scanning tunneling microscopy (…

cond-mat.str-el2020

Revisiting the Possible 4f7 5d1 Ground State of Gd Impurities in SmB6 by Electron Spin Resonance

J. C. Souza, P. F. S. Rosa, U. Burkhardt +5

The search for topological states in strongly correlated electron systems has renewed the interest in the Kondo insulator SmB6. One of the most intriguing previous results was an a…

cond-mat.str-el2013

Interplay between Kondo suppression and Lifshitz transitions in YbRh $_{2}$ Si $_{2}$ at high magnetic fields

H. Pfau, R. Daou, S. Lausberg +11

We investigate the magnetic field dependent thermopower, thermal conductivity, resistivity and Hall effect in the heavy fermion metal YbRh2Si2. In contrast to reports on thermodyna…

cond-mat.other2023

Thermal conductivity of Barium Bismuthate at low temperatures

A. Henriques, D. M. N. Oliveira, M. Baksi +6

The perovskite BaBiO $_{3}$ crystallizes in a cubic structure and undergoes structural transitions toward lower symmetry phases upon cooling. The two low-temperature monoclinic phases…

cond-mat.str-el2024

Thermodynamic evidence for polaron stabilization inside the antiferromagnetic order of Eu $_{5}$ In $_{2}$ Sb $_{6}$

H. Dawczak-DÄbicki, M. Victoria Ale Crivillero, M. S. Cook +6

Materials exhibiting electronic inhomogeneities at the nanometer scale have enormous potential for applications. Magnetic polarons are one such type of inhomogeneity which link the…

cond-mat.str-el2022

An STM perspective on hexaborides: Surface states of the Kondo insulator SmB $_{6}$

S. Wirth, P. Schlottmann

Compounds within the hexaboride class of materials exhibit a wide variety of interesting physical phenomena, including polaron formation and quadrupolar order. In particular, SmB$_…

cond-mat.str-el2012

Hall effect in heavy-fermion metals

Sunil Nair, S. Wirth, S. Friedemann +3

The heavy fermion systems present a unique platform in which strong electronic correlations give rise to a host of novel, and often competing, electronic and magnetic ground states…

cond-mat.mtrl-sci2021

Systematic manipulation of the surface conductivity of SmB $_{6}$

M. Victoria Ale Crivillero, M. KÃ¶nig, J. C. Souza +5

We show that the resistivity plateau of SmB $_{6}$ at low temperature, typically taken as a hallmark of its conducting surface state, can systematically be influenced by different sur…

cond-mat.mtrl-sci2023

Magnetic and electronic properties of Eu $_{5}$ In $_{2}$ Sb $_{6}$

M. Victoria Ale Crivillero, Sahana RÃ¶Ãler, S. Granovsky +5

The intermetallic compound Eu $_{5}$ In $_{2}$ Sb $_{6}$ , an antiferromagnetic material with nonsymmorphic crystalline structure, is investigated by magnetic, electronic transport and specifi…

nucl-ex2008

Two-Pion Production in Proton-Proton Collisions with Polarized Beam

S. Abd El-Bary, S. Abd El-Samad, R. Bilger +46

The two-pion production reaction $p p \to pp I ¨ ^{+} I ¨ ^{-}$ was measured with a polarized proton beam at $T_{p} \approx$ 750 and 800 MeV using the short version of the COSY-TOF spectro…

hep-ex2001

Measurement of the $p p \to K_{S} K_{S} I^\cdot$ cross section at beam momenta in the regions of 1.45 and 1.7 GeV/c

P. D. Barnes, B. Bunker, H. Dennert +26

The PS185 experiment at LEAR/CERN has investigated strangeness production in antiproton-proton collisions with final states such as $I^ I^$ , $I^£^{0} I^ + c . c$ , $\ove…

cond-mat.str-el2017

Valence state of Sm in single crystalline EuO thin films

A. Reisner, D. Kasinathan, S. Wirth +2

Samarium has two stable valence states, 2+ and 3+, which coexist in many compounds forming spatially homogeneous intermediate valence states. We study the valence state of samarium…

cond-mat.str-el2015

Kondo Destruction in Heavy Fermion Quantum Criticality and the Photoemission Spectrum of YbRh $_{2}$ Si $_{2}$

S. Paschen, S. Friedemann, S. Wirth +3

Heavy fermion metals provide a prototype setting to study quantum criticality. Experimentally, quantum critical points have been identified and studied in a growing list of heavy f…

cond-mat.supr-con2015

Interplay of structure, magnetism, and superconductivity in Se substituted iron telluride with excess Fe

Dona Cherian, S. RÃ¶Ãler, S. Wirth +1

We investigated the evolution of the temperature-composition phase diagram of Fe $_{1 + y}$ Te upon Se substitution. In particular, the effect of Se substitution on the two-step, coupl…

cond-mat.mtrl-sci1999

Hall cross size scaling and its application to measurements on nanometer-size iron particle arrays

S. Wirth, S. von Molnar

Hall crosses were used to measure the magnetic properties of arrays of ferromagnetic, nanometer-scale iron particles. The arrays typically consist of several hundred particles of 9…

cond-mat.str-el2008

Magnetotransport in the CeIrIn $_{5}$ system: The influence of antiferromagnetic fluctuations

Sunil Nair, M. Nicklas, J. L. Sarrao +3

We present an overview of magnetotransport measurements on the heavy-fermion superconductor CeIrIn $_{5}$ . Sensitive measurements of the Hall effect and magnetoresistance (MR) are use…

cond-mat.mtrl-sci2018

Observation of Landau quantization and standing waves in HfSiS

L. Jiao, Q. N. Xu, Y. P. Qi +4

Recently, HfSiS was found to be a new type of Dirac semimetal with a line of Dirac nodes in the band structure. Meanwhile, Rashba-split surface states are also pronounced in this c…

cond-mat.mtrl-sci2026

High-Resolution Capacitance Dilatometry of Microscopically Thin Samples Using a Miniature Dilatometer

R. KÃ¼chler, S. Panja, S. Wirth +1

We present a novel application of our high-resolution capacitance dilatometer, specifically engineered for the precise characterization of quantum materials. These materials, which…

cond-mat.str-el2007

A precursor state to unconventional superconductivity in CeIrIn $_{5}$

Sunil Nair, S. Wirth, M. Nicklas +4

We present sensitive measurements of the Hall effect and magnetoresistance in CeIrIn $_{5}$ down to temperatures of 50 mK and magnetic fields up to 15 T. The presence of a low tempe…

cond-mat.str-el2018

Evolution of ground state wave function in CeCoIn $_{5}$ upon Cd or Sn doping

K. Chen, F. Strigari, M. Sundermann +13

We present linear polarization-dependent soft x-ray absorption spectroscopy data at the Ce $M_{4, 5}$ edges of Cd and Sn doped CeCoIn $_{5}$ . The 4 $f$ ground state wave functions have…

cond-mat.str-el2017

Additional energy scale in SmB $_{6}$ at low temperature

Lin Jiao, Sahana RÃ¶Ãler, D. J. Kim +4

Topological insulators give rise to exquisite electronic properties due to their spin-momentum locked Dirac-cone-like band structure. Recently, it has been suggested that the requi…

cond-mat.str-el2000

Noise Probe of the Dynamic Phase Separation in La2/3Ca1/3MnO3

B. Raquet, A. Anane, S. Wirth +2

Giant Random Telegraph Noise (RTN) in the resistance fluctuation of a macroscopic film of perovskite-type manganese oxide La2/3Ca1/3MnO3 has been observed at various temperatures r…

nucl-ex2010

Influence of N*-resonances on hyperon production in the channel pp->K+ Lambda p at 2.95, 3.20 and 3.30 GeV/c beam momentum

TOF Collaboration, S. AbdEl-Samad, M. Abdel-Bary +66

Hyperon production in the threshold region was studied in the reaction pp -> K+Lp using the time-of-flight spectrometer COSY-TOF. Exclusive data, covering the full phase-space, wer…

cond-mat.supr-con2012

First-order structural transition in the magnetically ordered phase of Fe1.13Te

S. RÃ¶Ãler, Dona Cherian, W. Lorenz +8

Specific heat, resistivity, magnetic susceptibility, linear thermal expansion (LTE), and high-resolution synchrotron X-ray powder diffraction investigations of single crystals Fe1+…

cond-mat.str-el2010

Hall effect measurements on YbRh2Si2 and relatives in the light of electronic structure calculations

S. Friedemann, N. Oeschler, S. Wirth +7

We report experimental and theoretical investigations of the Hall effect in YbRh2Si2 and its reference compounds LuRh2Si2 and YbIr2Si2. Based on band-structure calculations we iden…

cond-mat.mtrl-sci2017

Bulk and surface electronic properties of SmB6: a hard x-ray photoelectron spectroscopy study

Y. Utsumi, D. Kasinathan, K-T. Ko +10

We have carried out bulk-sensitive hard x-ray photoelectron spectroscopy (HAXPES) measurements on in-situ cleaved and ex-situ polished SmB6 single crystals. Using the multiplet-str…

cond-mat.supr-con2010

Scanning Tunneling Microscopy studies on CeCoIn $_{5}$ and CeIrIn $_{5}$

S. Ernst, S. Wirth, F. Steglich +3

High--quality single crystals of the heavy fermion superconductors CeCoIn $_{5}$ and CeIrIn $_{5}$ have been studied by means of low--temperature Scanning Tunneling Microscopy. Methods w…

cond-mat.str-el2024

Magnetic and electronic inhomogeneity in Sm $_{1 - x}$ Eu $_{x}$ B $_{6}$

M. Victoria Ale Crivillero, Priscila F. S. Rosa, Z. Fisk +3

While SmB $_{6}$ attracts attention as a possible topological Kondo insulator, EuB $_{6}$ is known to host magnetic polarons that give rise to large magnetoresistive effects above its fe…

cond-mat.supr-con2015

Solitonic spin-liquid state due to the violation of the Lifshitz condition in Fe $_{1 + y}$ Te

Ph. Materne, C. Koz, U. K. RÃ¶Ãler +6

A combination of phenomenological analysis and MÃ¶ssbauer spectroscopy experiments on the tetragonal Fe $_{1 + y}$ Te system indicates that the magnetic ordering transition in compound…

cond-mat.supr-con2012

Disorder-driven electronic localization and phase separation in superconducting Fe1+yTe0.5Se0.5 single crystals

S. RÃ¶Ãler, Dona Cherian, S. Harikrishnan +6

We have investigated the influence of Fe-excess on the electrical transport and magnetism of Fe1+yTe0.5Se0.5 (y=0.04 and 0.09) single crystals. Both compositions exhibit resistivel…

cond-mat.str-el2017

Evolution of the Kondo lattice and non-Fermi liquid excitations in a heavy-fermion metal

S. Seiro, L. Jiao, S. Kirchner +7

Strong electron correlations can give rise to extraordinary properties of metals with renormalized quasiparticles which are at the basis of Landau's Fermi liquid theory. Near a qua…

cond-mat.str-el2010

Break up of heavy fermions at an antiferromagnetic instability

S. Friedemann, S. Wirth, S. Kirchner +7

We present results of high-resolution, low-temperature measurements of the Hall coefficient, thermopower, and specific heat on stoichiometric YbRh2Si2. They support earlier conclus…

cond-mat.str-el2002

Observation of minority spin character of the new electron doped manganite La_0.7Ce_0.3MnO_3 from tunneling magnetoresistance

C. Mitra, P. Raychaudhuri, K. Doerr +4

We report the magnetotransport characteristics of a trilayer ferromagnetic tunnel junction build of an electron doped manganite (La_0.7Ce_0.3MnO_3) and a hole doped manganite (La_0…

hep-ex2009

Collins and Sivers asymmetries for pions and kaons in muon-deuteron DIS

The COMPASS Collaboration, M. Alekseev, V. Yu. Alexakhin +238

The measurements of the Collins and Sivers asymmetries of identified hadrons produced in deep-inelastic scattering of 160 GeV/c muons on a transversely polarised 6LiD target at COM…

cond-mat.str-el2008

Analysis of the normal state magnetotransport in CeIrIn $_{5}$

Sunil Nair, M. Nicklas, J. L. Sarrao +3

We present an analysis of the normal state magnetotransport in the heavy fermion superconductor CeIrIn $_{5}$ . The Hall effect and the transverse magnetoresistance in this material…

Publications (68)

Hall-effect evolution across a heavy-fermion quantum critical point

Lifshitz transitions and quasiparticle de-renormalization in YbRh2​Si2​

Nature of magnetic order in YbInNi4

Comparison of Isoscalar Vector Meson Production Cross Sections in Proton-Proton Collisions

CeCu2​Si2​ and YbRh2​Si2​: Strange Cases of Heavy-Fermion Superconductivity

Routes to heavy-fermion superconductivity

Pressure-induced ferromagnetism due to an anisotropic electronic topological transition in Fe1.08Te

Correlation between the phase diagram and the crystal-field wave functions of CeRh(1-x)Ir(x)In5

Surface and electronic structure at atomic length scales of the non-symmorphic antiferromagnet Eu5​In2​Sb6​

Hybridization gap and Fano resonance in SmB6​

Photoemission and x-ray absorption spectroscopy study of electron-doped colossal magnetoresistance manganite: La0.7Ce0.3MnO3 film

Tuning the topological character of half-Heusler systems: A comparative study on YTBi (T = Pd, Pt)

Polaronic state and nanometer-scale phase separation in colossal magnetoresistive manganites

Total Cross Section of the Reaction pp \to pK^+ÎClose to Threshold

The planar triangular S=3/2 magnet AgCrSe2​: magnetic frustration, short range correlations, and field tuned anisotropic cycloidal magnetic order

Comment on "Zeeman-Driven Lifshitz Transition: A Model for the Experimentally Observed Fermi-Surface Reconstruction in YbRh2Si2"

Coupling between magnetic and thermodynamic properties in RRh2​Si2​ (R = Dy, Ho)

Nuclear-order-induced quantum criticality and heavy-fermion superconductivity at ultra-low temperatures in YbRh2​Si2​

Direct observation of electron doping in La0.7Ce0.3MnO3 using x-ray absorption spectroscopy

Comparative Scanning Tunneling Microscopy Study on Hexaborides

Thermal and Electrical Transport across a Magnetic Quantum Critical Point

The inherently absent 2-dimensional electron gas in ultra-pure GaN/AlGaN heterostructures

Single-Pion Production in pp Collisions at =.95 GeV/c (I)

Single-Pion Production in pp Collisions at 0.95 GeV/c (II)

Magnetism and superconductivity driven by identical 4f states in a heavy-fermion metal

Surface excitations relaxation in the Kondo insulator Sm1−x​Gdx​B6​

On the Production of I¨+I¨+ Pairs in pp Collisions at 0.8 GeV

High spin polarization in the ferromagnetic filled skutterudites KFe4Sb12 and NaFe4Sb12

Production of Lambda and Sigma^0 hyperons in proton-proton collisions

The precursor state to superconductivity in CeIrIn5​: Unusual scaling of magnetotransport

Interplay between unconventional superconductivity and heavy-fermion quantum criticality: CeCu2​Si2​ versus YbRh2​Si2​

Pressure-induced phase transitions and high-pressure tetragonal phase of Fe1.08Te

Surface and electronic structure of SmB6​ through Scanning Tunneling Microscopy

Phase stability in SmB6​

Revisiting the Possible 4f7 5d1 Ground State of Gd Impurities in SmB6 by Electron Spin Resonance

Interplay between Kondo suppression and Lifshitz transitions in YbRh2​Si2​ at high magnetic fields

Thermal conductivity of Barium Bismuthate at low temperatures

Thermodynamic evidence for polaron stabilization inside the antiferromagnetic order of Eu5​In2​Sb6​

An STM perspective on hexaborides: Surface states of the Kondo insulator SmB6​

Hall effect in heavy-fermion metals

Systematic manipulation of the surface conductivity of SmB6​

Magnetic and electronic properties of Eu5​In2​Sb6​

Two-Pion Production in Proton-Proton Collisions with Polarized Beam

Measurement of the p​p→KS​KS​I^⋅ cross section at beam momenta in the regions of 1.45 and 1.7 GeV/c

Valence state of Sm in single crystalline EuO thin films

Kondo Destruction in Heavy Fermion Quantum Criticality and the Photoemission Spectrum of YbRh2​Si2​

Interplay of structure, magnetism, and superconductivity in Se substituted iron telluride with excess Fe

Hall cross size scaling and its application to measurements on nanometer-size iron particle arrays

Magnetotransport in the CeIrIn5​ system: The influence of antiferromagnetic fluctuations

Observation of Landau quantization and standing waves in HfSiS

High-Resolution Capacitance Dilatometry of Microscopically Thin Samples Using a Miniature Dilatometer

A precursor state to unconventional superconductivity in CeIrIn5​

Evolution of ground state wave function in CeCoIn5​ upon Cd or Sn doping

Additional energy scale in SmB6​ at low temperature

Noise Probe of the Dynamic Phase Separation in La2/3Ca1/3MnO3

Influence of N*-resonances on hyperon production in the channel pp->K+ Lambda p at 2.95, 3.20 and 3.30 GeV/c beam momentum

First-order structural transition in the magnetically ordered phase of Fe1.13Te

Hall effect measurements on YbRh2Si2 and relatives in the light of electronic structure calculations

Bulk and surface electronic properties of SmB6: a hard x-ray photoelectron spectroscopy study

Scanning Tunneling Microscopy studies on CeCoIn5​ and CeIrIn5​

Magnetic and electronic inhomogeneity in Sm1−x​Eux​B6​

Solitonic spin-liquid state due to the violation of the Lifshitz condition in Fe1+y​Te

Disorder-driven electronic localization and phase separation in superconducting Fe1+yTe0.5Se0.5 single crystals

Evolution of the Kondo lattice and non-Fermi liquid excitations in a heavy-fermion metal

Break up of heavy fermions at an antiferromagnetic instability

Observation of minority spin character of the new electron doped manganite La_0.7Ce_0.3MnO_3 from tunneling magnetoresistance

Collins and Sivers asymmetries for pions and kaons in muon-deuteron DIS

Analysis of the normal state magnetotransport in CeIrIn5​

Lifshitz transitions and quasiparticle de-renormalization in YbRh $_{2}$ Si $_{2}$

CeCu $_{2}$ Si $_{2}$ and YbRh $_{2}$ Si $_{2}$ : Strange Cases of Heavy-Fermion Superconductivity

Surface and electronic structure at atomic length scales of the non-symmorphic antiferromagnet Eu $_{5}$ In $_{2}$ Sb $_{6}$

Hybridization gap and Fano resonance in SmB $_{6}$

Tuning the topological character of half-Heusler systems: A comparative study on Y $T$ Bi ( $T$ = Pd, Pt)

Total Cross Section of the Reaction pp \to pK^+ÎClose to Threshold

The planar triangular $S = 3/2$ magnet AgCrSe $_{2}$ : magnetic frustration, short range correlations, and field tuned anisotropic cycloidal magnetic order

Coupling between magnetic and thermodynamic properties in $R$ Rh $_{2}$ Si $_{2}$ ( $R$ = Dy, Ho)

Nuclear-order-induced quantum criticality and heavy-fermion superconductivity at ultra-low temperatures in YbRh $_{2}$ Si $_{2}$

Magnetism and superconductivity driven by identical 4 $f$ states in a heavy-fermion metal

Surface excitations relaxation in the Kondo insulator Sm $_{1 - x}$ Gd $_{x}$ B $_{6}$

On the Production of $I ¨ ^{+} I ¨ ^{+}$ Pairs in pp Collisions at 0.8 GeV

The precursor state to superconductivity in CeIrIn $_{5}$ : Unusual scaling of magnetotransport

Interplay between unconventional superconductivity and heavy-fermion quantum criticality: CeCu $_{2}$ Si $_{2}$ versus YbRh $_{2}$ Si $_{2}$

Surface and electronic structure of SmB $_{6}$ through Scanning Tunneling Microscopy

Phase stability in SmB $_{6}$

Interplay between Kondo suppression and Lifshitz transitions in YbRh $_{2}$ Si $_{2}$ at high magnetic fields

Thermodynamic evidence for polaron stabilization inside the antiferromagnetic order of Eu $_{5}$ In $_{2}$ Sb $_{6}$

An STM perspective on hexaborides: Surface states of the Kondo insulator SmB $_{6}$

Systematic manipulation of the surface conductivity of SmB $_{6}$

Magnetic and electronic properties of Eu $_{5}$ In $_{2}$ Sb $_{6}$

Measurement of the $p p \to K_{S} K_{S} I^\cdot$ cross section at beam momenta in the regions of 1.45 and 1.7 GeV/c

Kondo Destruction in Heavy Fermion Quantum Criticality and the Photoemission Spectrum of YbRh $_{2}$ Si $_{2}$

Magnetotransport in the CeIrIn $_{5}$ system: The influence of antiferromagnetic fluctuations

A precursor state to unconventional superconductivity in CeIrIn $_{5}$

Evolution of ground state wave function in CeCoIn $_{5}$ upon Cd or Sn doping

Additional energy scale in SmB $_{6}$ at low temperature

Scanning Tunneling Microscopy studies on CeCoIn $_{5}$ and CeIrIn $_{5}$

Magnetic and electronic inhomogeneity in Sm $_{1 - x}$ Eu $_{x}$ B $_{6}$

Solitonic spin-liquid state due to the violation of the Lifshitz condition in Fe $_{1 + y}$ Te

Analysis of the normal state magnetotransport in CeIrIn $_{5}$