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Publications (42)

cond-mat.str-el2018

Evidence for Weyl fermions in a canonical heavy-fermion semimetal YbPtBi

C. Y. Guo, F. Wu, Z. Z. Wu +8

The manifestation of Weyl fermions in strongly correlated electron systems is of particular interest. We report evidence for Weyl fermions in the heavy fermion semimetal YbPtBi fro…

cond-mat.str-el2019

Light-induced renormalization of the Dirac quasiparticles in the nodal-line semimetal ZrSiSe

G. Gatti, A. Crepaldi, M. Puppin +16

In nodal-line semimetals linearly dispersing states form Dirac loops in the reciprocal space, with high degree of electron-hole symmetry and almost-vanishing density of states near…

cond-mat.mes-hall2007

Characterization of graphene through anisotropy of constant-energy maps in angle-resolved photoemission

M. Mucha-Kruczynski, O. Tsyplyatyev, A. Grishin +4

We show theoretically how constant-energy maps of the angle-resolved photoemission intensity can be used to test wave function symmetry in graphene. For monolayer graphene, we demo…

cond-mat.mtrl-sci2026

Tuning the low-energy band structure in twisted bilayer WSe2

T. -H. -Y. Vu, O. J. Clark, N. H. Jo +21

Tuning the electronic structures of two-dimensional (2D) material-based heterostructures is of crucial importance for their use in functional next-generation electronics. Here, thr…

cond-mat.str-el2009

Renormalization of Bulk Magnetic Electron States at High Binding Energies

A. Hofmann, X. Y. Cui, J. Schaefer +11

The quasiparticle dynamics of electrons in a magnetically ordered state is investigated by high-resolution angle-resolved photoemission of Ni(110) at 10 K. The self-energy is extra…

cond-mat.supr-con2009

Three- to Two-Dimensional Transition of the Electronic Structure in CaFe2As2 - parent compound for an iron arsenic high temperature superconductor

Chang Liu, Takeshi Kondo, Ni Ni +9

We use angle-resolved photoemission spectroscopy (ARPES) to study the electronic properties of CaFe2As2 - parent compound of a pnictide superconductor. We find that the structural…

cond-mat.str-el2007

Effect of linear density of states on the quasi-particle dynamics and small electron-phonon coupling in graphite

C. S. Leem, B. J. Kim, Chul Kim +8

We obtained the spectral function of very high quality natural graphite single crystals using angle resolved photoelectron spectroscopy (ARPES). A clear separation of non-bonding a…

cond-mat.supr-con2006

A universal high energy anomaly in angle resolved photoemission spectra of high temperature superconductors - possible evidence of spinon and holon branches

J. Graf, G. -H. Gweon, K. McElroy +10

A universal high energy anomaly in the single particle spectral function is reported in three different families of high temperature superconductors by using angle-resolved photoem…

cond-mat.supr-con2008

Direct observation of a Fermi surface and superconducting gap in LuNi2B2C

P. Starowicz, C. Liu, R. Khasanov +9

We measured the Fermi surface (FS), band dispersion and superconducting gap in LuNi2B2C using Angle Resolved Photoemission Spectroscopy. Experimental data were compared with the ti…

cond-mat.str-el2013

Electronic Instability in a Zero-Gap Semiconductor: the Charge-Density Wave in (TaSe4)2I

C. Tournier-Colletta, L. Moreschini, G. AutÃ¨s +10

We report a comprehensive study of the paradigmatic quasi-1D compound (TaSe4)2I performed by means of angle-resolved photoemission spectroscopy (ARPES) and first-principles electro…

cond-mat.mtrl-sci2021

Extremely large magnetoresistance from electron-hole compensation in the nodal loop semimetal ZrP $_{2}$

J. Bannies, E. Razzoli, M. Michiardi +10

Several early transition metal dipnictides have been found to host topological semimetal states and exhibit large magnetoresistance. In this study, we use angle-resolved photoemiss…

cond-mat.mtrl-sci2025

Single domain spectroscopic signatures of a magnetic Kagome metal

L. Plucinski, G. Bihlmayer, Y. Mokrousov +7

Spin- and orbital-resolved access to the electronic bands is necessary to establish key properties of quantum materials such as the quantum-geometric tensor. Despite recent revival…

cond-mat.supr-con2020

Three interaction energy scales in single-layer high-T $_{C}$ cuprate HgBa $_{2}$ CuO $_{4 + I^´}$

S. A. Sreedhar, Antonio Rossi, J. Nayak +10

The lamellar cuprate superconductors exhibit the highest ambient-pressure superconducting transition temperatures (T $_{C}$ ) and, after more than three decades of extraordinary resear…

cond-mat.mtrl-sci2013

Momentum-resolved electronic structure at a buried interface from soft x-ray standing-wave angle-resolved photoemission

A. X. Gray, J. MinÃ¡r, L. Plucinski +19

Angle-resolved photoemission spectroscopy (ARPES) is a powerful technique for the study of electronic structure, but it lacks a direct ability to study buried interfaces between tw…

cond-mat.str-el2016

Hallmarks of Hund's coupling in the Mott insulator Ca $_{2}$ RuO $_{4}$

D. Sutter, C. G. Fatuzzo, S. Moser +22

A paradigmatic case of multi-band Mott physics including spin-orbit and Hund's coupling is realised in Ca $_{2}$ RuO $_{4}$ . Progress in understanding the nature of this Mott insulating p…

cond-mat.str-el2003

Fermi surface and quasiparticle dynamics of Na(x)CoO2 {x=0.7} investigated by Angle-Resolved Photoemission Spectroscopy

M. Z. Hasan, Y. -D. Chuang, A. P. Kuprin +13

We present an angle-resolved photoemission study of Na0.7CoO2, the host cobaltate of the NaxCoO2.yH2O series. Our results show a large hexagonal-like hole-type Fermi surface, an ex…

cond-mat.str-el2013

The electronic structure of the high-symmetry perovskite iridate Ba2IrO4

S. Moser, L. Moreschini, A. Ebrahimi +11

We report angle-resolved photoemission (ARPES) measurements, density functional and model tight-binding calculations on Ba $_{2}$ IrO $_{4}$ (Ba-214), an antiferromagnetic ( $T_{N} = 230$ K) i…

cond-mat.str-el2022

Robust Kagome Electronic Structure in Topological Quantum Magnets XMn6Sn6 (X = Dy, Tb, Gd, Y)

X. Gu, C. Chen, W. S. Wei +24

Crystal geometry can greatly influence the emergent properties of quantum materials. As an example, the kagome lattice is an ideal platform to study the rich interplay between topo…

cond-mat.supr-con2008

Controlling the self-doping of YBa2C3O7-d polar surfaces: From Fermi surface to nodal Fermi arcs by ARPES

M. A. Hossain, J. D. F. Mottershead, A. Bostwick +8

The discovery of quantum oscillations in the normal-state electrical resistivity of YBa2Cu3O6.5 provides the first evidence for the existence of Fermi surface (FS) pockets in an un…

cond-mat.supr-con2009

Unusual Fermi surface nesting in parent compounds of iron arsenic high temperature superconductors revealed by Angle Resolved Photoemission Spectroscopy

Takeshi Kondo, R. M. Fernandes, R. Khasanov +10

We use angle resolved photoemission spectroscopy (ARPES) to study the band structure of BaFe2As2 and CaFe2As2, two of the parent compounds of the iron arsenic high temperature supe…

cond-mat.str-el2010

Strictly One-Dimensional Electron System in Au Chains on Ge(001) Revealed By Photoelectron K-Space Mapping

S. Meyer, J. Schaefer, C. Blumenstein +5

Atomic nanowires formed by Au on Ge(001) are scrutinized for the band topology of the conduction electron system by k-resolved photoemission. Two metallic electron pockets are obse…

cond-mat.mtrl-sci2013

Tunable polaronic conduction in anatase TiO2

S. Moser, L. Moreschini, J. Jacimovic +9

Oxygen vacancies created in anatase TiO2 by UV photons (80 - 130 eV) provide an effective electron-doping mechanism and induce a hitherto unobserved dispersive metallic state. Angl…

cond-mat.supr-con2008

Origins of large critical temperature variations in single layer cuprates

A. D. Palczewski, T. Kondo, R. Khasanov +14

We study the electronic structures of two single layer superconducting cuprates, Tl $_{2}$ Ba $_{2}$ CuO $_{6 + I^´}$ (Tl2201) and (Bi $_{1.35}$ Pb $_{0.85}$ )(Sr $_{1.47}$ La $_{0.38}$ )CuO $_{6 + I^´}$ …

cond-mat.mtrl-sci2012

Giant ambipolar Rashba effect in a semiconductor: BiTeI

A. Crepaldi, L. Moreschini, G. AutÃ¨s +11

We observe a giant spin-orbit splitting in bulk and surface states of the non-centrosymmetric semiconductor BiTeI. We show that the Fermi level can be placed in the valence or in t…

cond-mat.mes-hall2020

Visualizing Orbital Content of Electronic Bands in Anisotropic 2D Semiconducting ReSe $_{2}$

B. K. Choi, S. Ulstrup, S. M. Gunasekera +12

Many properties of layered materials change as they are thinned from their bulk forms down to single layers, with examples including indirect-to-direct band gap transition in 2H se…

cond-mat.mtrl-sci2022

Symmetry-enforced Fermi degeneracy in topological semimetal RhSb $_{3}$

Kefeng Wang, Limin Wang, I-Lin Liu +9

Predictions of a topological electronic structure in the skutterudite TPn $_{3}$ family (T=transition metal, Pn=pnictogen) are investigated via magnetoresistance, quantum oscillations…

cond-mat.str-el2009

Non-monotonic Fermi surface evolution and its correlation with stripe ordering in bilayer manganites

Z. Sun, Q. Wang, J. F. Douglas +11

In correlated electron systems such as cuprate superconductors and colossal magnetoresistive (CMR) oxides there is often a tendency for a nanoscale self-organization of electrons t…

cond-mat.str-el2014

Fermi Arcs in a Doped Pseudospin-1/2 Heisenberg Antiferromagnet

Y. K. Kim, O. Krupin, J. D. Denlinger +6

High temperature superconductivity in cuprates arises from an electronic state that remains poorly understood. We report the observation of a related electronic state in a non-cupr…

cond-mat.mes-hall2019

Topological surface states above the Fermi energy in $Hf_{2} Te_{2} P$

T. J. Boyle, A. Rossi, M. Walker +10

We report a detailed experimental study of the band structure of the recently discovered topological material $Hf_{2} Te_{2} P$ . Using the combination of sca…

cond-mat2003

Differential Photoelectron Holography: A New Approach for Three-Dimensional Atomic Imaging

S. Omori, Y. Nihei, E. Rotenberg +6

We propose differential holography as a method to overcome the long-standing forward-scattering problem in photoelectron holography and related techniques for the three-dimensional…

cond-mat.supr-con2008

Fermi surface and strong coupling superconductivity in single crystal NdFeAsO_{1-x}F_x

C. Liu, T. Kondo, M. E. Tillman +12

We use angle-resolved photoemission spectroscopy (ARPES) to investigate the electronic properties of the newly discovered oxypnictide superconductor, NdFeAsO_{1-x}F_x. We find a we…

cond-mat.str-el2017

Quasiparticles and charge transfer at the two surfaces of the honeycomb iridate Na $_{2}$ IrO $_{3}$

L. Moreschini, I. Lo Vecchio, N. P. Breznay +10

Direct experimental investigations of the low-energy electronic structure of the Na $_{2}$ IrO $_{3}$ iridate insulator are sparse and draw two conflicting pictures. One relies on flat ba…

cond-mat.supr-con2010

Loss of nodal quasiparticle integrity in underdoped YBa2Cu3O6+x

D. Fournier, G. Levy, Y. Pennec +8

Arguably the most intriguing aspect of the physics of cuprates is the close proximity between the record high-Tc superconductivity (HTSC) and the antiferromagnetic charge-transfer…

cond-mat.mtrl-sci2009

High resolution angle resolved photoemission studies on quasi-particle dynamics in graphite

C. S. Leem, B. J. Kim, Chul Kim +9

We obtained the spectral function of the graphite H point using high resolution angle resolved photoelectron spectroscopy (ARPES). The extracted width of the spectral function (inv…

cond-mat.str-el2013

Minority-spin $t_{2 g}$ states and the degree of spin polarization in ferromagnetic metallic La $_{2 - 2 x}$ Sr $_{1 + 2 x}$ Mn $_{2}$ O $_{7}$ ( $x = 0.38$ )

Z. Sun, Q. Wang, J. F. Douglas +10

Using angle-resolved photoemission spectroscopy (ARPES), we investigate the electronic band structure and Fermi surface of ferromagnetic La $_{2 - 2 x}$ Sr $_{1 + 2 x}$ Mn $_{2}$ O $_{7}$ ( $x = 0.38$ …

cond-mat.supr-con2008

The Fermi surface of Ba(1-x)K(x)Fe2As2 and its evolution with doping

C. Liu, G. D. Samolyuk, Y. Lee +11

We use angle-resolved photoemission spectroscopy (ARPES) to investigate the electronic properties of the newly discovered iron-arsenic superconductor, Ba(1-x)K(x)Fe2As2 and non-sup…

cond-mat.str-el2019

Surface states and Rashba-type spin polarization in antiferromagnetic MnBi $_{2}$ Te $_{4}$

R. C. Vidal, H. Bentmann, T. R. F. Peixoto +32

The layered van der Waals antiferromagnet MnBi $_{2}$ Te $_{4}$ has been predicted to combine the band ordering of archetypical topological insulators such as Bi $_{2}$ Te $_{3}$ with the magnet…

cond-mat.str-el2008

Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4

B. J. Kim, Hosub Jin, S. J. Moon +11

We investigated electronic structure of 5d transition-metal oxide Sr2IrO4 using angle-resolved photoemission, optical conductivity, and x-ray absorption measurements and first-prin…

cond-mat.mes-hall2013

Elemental Topological Insulator with a Tunable Fermi Level: Strained Î±-Sn on InSb(001)

A. Barfuss, L. Dudy, M. R. Scholz +16

We report on the epitaxial fabrication and electronic properties of a topological phase in strained Î±-Sn on InSb. The topological surface state forms in the presence of an unusual…

cond-mat.str-el2016

Depth-Resolved Composition and Electronic Structure of Buried Layers and Interfaces in a LaNiO $_{3}$ /SrTiO $_{3}$ Superlattice from Soft- and Hard- X-ray Standing-Wave Angle-Resolved Photoemission

D. Eiteneer, G. K. PÃ¡lsson, S. NemÅ¡Ã¡k +21

LaNiO $_{3}$ (LNO) is an intriguing member of the rare-earth nickelates in exhibiting a metal-insulator transition for a critical film thickness of about 4 unit cells [Son et al., App…

cond-mat.mtrl-sci2010

Band structure of SnTe studied by Photoemission Spectroscopy

P. B. Littlewood, B. Mihaila, R. K. Schulze +8

We present an angle-resolved photoemission spectroscopy study of the electronic structure of SnTe, and compare the experimental results to ab initio band structure calculations as…

cond-mat.supr-con2006

Dual character of the electronic structure in YBa2Cu4O8: conduction bands of CuO2 planes and CuO chains

T. Kondo, R. Khasanov, J. Karpinski +10

We use microprobe Angle-Resolved Photoemission Spectroscopy (muARPES) to separately investigate the electronic properties of CuO2 planes and CuO chains in the high temperature supe…

Publications (42)

Evidence for Weyl fermions in a canonical heavy-fermion semimetal YbPtBi

Light-induced renormalization of the Dirac quasiparticles in the nodal-line semimetal ZrSiSe

Characterization of graphene through anisotropy of constant-energy maps in angle-resolved photoemission

Tuning the low-energy band structure in twisted bilayer WSe2

Renormalization of Bulk Magnetic Electron States at High Binding Energies

Three- to Two-Dimensional Transition of the Electronic Structure in CaFe2As2 - parent compound for an iron arsenic high temperature superconductor

Effect of linear density of states on the quasi-particle dynamics and small electron-phonon coupling in graphite

A universal high energy anomaly in angle resolved photoemission spectra of high temperature superconductors - possible evidence of spinon and holon branches

Direct observation of a Fermi surface and superconducting gap in LuNi2B2C

Electronic Instability in a Zero-Gap Semiconductor: the Charge-Density Wave in (TaSe4)2I

Extremely large magnetoresistance from electron-hole compensation in the nodal loop semimetal ZrP2​

Single domain spectroscopic signatures of a magnetic Kagome metal

Three interaction energy scales in single-layer high-TC​ cuprate HgBa2​CuO4+I^´​

Momentum-resolved electronic structure at a buried interface from soft x-ray standing-wave angle-resolved photoemission

Hallmarks of Hund's coupling in the Mott insulator Ca2​RuO4​

Fermi surface and quasiparticle dynamics of Na(x)CoO2 {x=0.7} investigated by Angle-Resolved Photoemission Spectroscopy

The electronic structure of the high-symmetry perovskite iridate Ba2IrO4

Robust Kagome Electronic Structure in Topological Quantum Magnets XMn6Sn6 (X = Dy, Tb, Gd, Y)

Controlling the self-doping of YBa2C3O7-d polar surfaces: From Fermi surface to nodal Fermi arcs by ARPES

Unusual Fermi surface nesting in parent compounds of iron arsenic high temperature superconductors revealed by Angle Resolved Photoemission Spectroscopy

Strictly One-Dimensional Electron System in Au Chains on Ge(001) Revealed By Photoelectron K-Space Mapping

Tunable polaronic conduction in anatase TiO2

Origins of large critical temperature variations in single layer cuprates

Giant ambipolar Rashba effect in a semiconductor: BiTeI

Visualizing Orbital Content of Electronic Bands in Anisotropic 2D Semiconducting ReSe2​

Symmetry-enforced Fermi degeneracy in topological semimetal RhSb3​

Non-monotonic Fermi surface evolution and its correlation with stripe ordering in bilayer manganites

Fermi Arcs in a Doped Pseudospin-1/2 Heisenberg Antiferromagnet

Topological surface states above the Fermi energy in Hf2​Te2​P

Differential Photoelectron Holography: A New Approach for Three-Dimensional Atomic Imaging

Fermi surface and strong coupling superconductivity in single crystal NdFeAsO_{1-x}F_x

Quasiparticles and charge transfer at the two surfaces of the honeycomb iridate Na2​IrO3​

Loss of nodal quasiparticle integrity in underdoped YBa2Cu3O6+x

High resolution angle resolved photoemission studies on quasi-particle dynamics in graphite

Minority-spin t2g​ states and the degree of spin polarization in ferromagnetic metallic La2−2x​Sr1+2x​Mn2​O7​ (x=0.38)

The Fermi surface of Ba(1-x)K(x)Fe2As2 and its evolution with doping

Surface states and Rashba-type spin polarization in antiferromagnetic MnBi2​Te4​

Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4

Elemental Topological Insulator with a Tunable Fermi Level: Strained Î±-Sn on InSb(001)

Depth-Resolved Composition and Electronic Structure of Buried Layers and Interfaces in a LaNiO3​/SrTiO3​ Superlattice from Soft- and Hard- X-ray Standing-Wave Angle-Resolved Photoemission

Band structure of SnTe studied by Photoemission Spectroscopy

Dual character of the electronic structure in YBa2Cu4O8: conduction bands of CuO2 planes and CuO chains

Extremely large magnetoresistance from electron-hole compensation in the nodal loop semimetal ZrP $_{2}$

Three interaction energy scales in single-layer high-T $_{C}$ cuprate HgBa $_{2}$ CuO $_{4 + I^´}$

Hallmarks of Hund's coupling in the Mott insulator Ca $_{2}$ RuO $_{4}$

Visualizing Orbital Content of Electronic Bands in Anisotropic 2D Semiconducting ReSe $_{2}$

Symmetry-enforced Fermi degeneracy in topological semimetal RhSb $_{3}$

Topological surface states above the Fermi energy in $Hf_{2} Te_{2} P$

Quasiparticles and charge transfer at the two surfaces of the honeycomb iridate Na $_{2}$ IrO $_{3}$

Minority-spin $t_{2 g}$ states and the degree of spin polarization in ferromagnetic metallic La $_{2 - 2 x}$ Sr $_{1 + 2 x}$ Mn $_{2}$ O $_{7}$ ( $x = 0.38$ )

Surface states and Rashba-type spin polarization in antiferromagnetic MnBi $_{2}$ Te $_{4}$

Depth-Resolved Composition and Electronic Structure of Buried Layers and Interfaces in a LaNiO $_{3}$ /SrTiO $_{3}$ Superlattice from Soft- and Hard- X-ray Standing-Wave Angle-Resolved Photoemission