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Publications (39)

cond-mat.supr-con2015

Signatures of nematic quantum critical fluctuations in the Raman spectra of lightly doped cuprates

S. Caprara, M. Colonna, C. Di Castro +4

We consider the lightly doped cuprates Y $_{0.97}$ Ca $_{0.03}$ BaCuO $_{6.05}$ and La $_{2 - x}$ Sr $_{x}$ CuO $_{4}$ (with $x = 0.02$ ,0.04), where the presence of a fluctuating nematic state has o…

cond-mat.str-el2018

Interplay of lattice, electronic and spin degrees of freedom in detwinned BaFe $_{2}$ As $_{2}$ : a Raman scattering study

A. Baum, Ying Li, M. TomiÄ +10

We report results of Raman scattering experiments on twin-free BaFe $_{2}$ As $_{2}$ with the main focus placed on understanding the influence of electronic and spin degrees of freedo…

cond-mat.str-el2006

Dynamical Properties of Charged Stripes in La_{2-x}Sr_xCuO_4

L. Tassini, F. Venturini, Q. -M. Zhang +3

Inelastic light-scattering spectra of underdoped $L a_{2 - x} S r_{x} Cu O_{4}$ (LSCO) single crystals are presented which provide direct evidence of the formation of quasi one-dimensio…

cond-mat.supr-con2009

Spectral signatures of critical charge and spin fluctuations in cuprates

M. Grilli, S. Caprara, C. Di Castro +4

We discuss how Raman spectra of high temperature superconducting cuprates are affected by nearly-critical spin and charge collective modes, which are coupled to charge carriers nea…

cond-mat.supr-con1999

Carrier relaxation, pseudogap, and superconducting gap in high-Tc cuprates: A Raman scattering study

M. Opel, R. Nemetschek, C. Hoffmann +9

We describe results of electronic Raman-scattering experiments in differently doped single crystals of Y-123 and Bi-2212. The comparison of AF insulating and metallic samples sugge…

cond-mat.str-el2025

Chiral electronic excitations and strong electron-phonon coupling to Weyl fermions in the Kagome semimetal Co $_{3}$ Sn $_{2}$ S $_{2}$

G. He, M. Kute, Z. C. Xu +10

We present results of a Raman scattering study of the Kagome ferromagnet Co $_{3}$ Sn $_{2}$ S $_{2}$ , with a focus on electronic and phononic excitations and their interplay. We provide a th…

cond-mat.supr-con2008

First-Order Type Effects in YBa $_{2}$ Cu $_{3}$ O $_{6 + x}$ at the Onset of Superconductivity

L. Tassini, W. Prestel, A. Erb +2

We present results of Raman scattering experiments on tetragonal $(Y_{1 - y} C a_{y}) B a_{2} C u_{3} O_{6 + x}$ for doping levels $p (x, y)$ between 0 and 0.07 holes/CuO $_{2}$ . Below the o…

cond-mat.supr-con2022

Evolution of lattice, spin, and charge properties across the phase diagram of FeSe $_{1 - x}$ S $_{x}$

N. Lazarevic, A. Baum, A. Milosavljevic +11

A Raman scattering study covering the entire substitution range of the FeSe $_{1 - x}$ S $_{x}$ solid solution is presented. Data were taken as a function of sulfur concentration $x$ for…

cond-mat.str-el2009

Raman scattering evidence for a cascade-like evolution of the charge-density-wave collective amplitude mode

M. Lavagnini, H. -M. Eiter, L. Tassini +6

The two-dimensional rare-earth tri-tellurides undergo a unidirectional charge-density-wave (CDW) transition at high temperature and, for the heaviest members of the series, a bidir…

cond-mat.supr-con2009

Pair breaking versus symmetry breaking: Origin of the Raman modes in superconducting cuprates

N. Munnikes, B. Muschler, F. Venturini +9

We performed Raman experiments on superconducting $B i_{2} S r_{2} (C a_{1 - x} Y_{x}) C u_{2} O_{8 + I^´}$ (Bi-2212) and $YB a_{2} C u_{3} O_{6 + x}$ (Y-123) single crystals. These results…

cond-mat.str-el2006

Inelastic Light Scattering From Correlated Electrons

T. P. Devereaux, R. Hackl

Inelastic light scattering is an intensively used tool in the study of electronic properties of solids. Triggered by the discovery of high temperature superconductivity in the cupr…

cond-mat.supr-con2011

Relationship among superconductivity, pseudogap, and high-energy magnetic fluctuations in a model high-Tc superconductor from electronic Raman scattering

Yuan Li, M. Le Tacon, M. Bakr +9

We use electronic Raman scattering to study the model single-layer cuprate superconductor HgBa2CuO4+d. In an overdoped sample, we observe a pronounced amplitude enhancement of a hi…

cond-mat.supr-con2010

Femtosecond Quasiparticle and Phonon Dynamics in Superconducting YBa2Cu3O7 Studied by Wideband Terahertz Spectroscopy

A. Pashkin, M. Porer, M. Beyer +10

We measure the anisotropic mid-infrared response of electrons and phonons in bulk YBa2Cu3O7 after femtosecond photoexcitation. A line shape analysis of specific lattice modes revea…

cond-mat.dis-nn2011

Light scattering study of low-energy vibrational excitations in the metallic glass Ni $_{67}$ Zr $_{33}$ using electronic Raman scattering

B. Muschler, I. TÃ¼ttÅ, A. Zawadowski +2

The Raman response of the metallic glass Ni $_{67}$ Zr $_{33}$ is measured as a function of polarization and temperature and analyzed theoretically. Unexpectedly, the intensity in the…

cond-mat.supr-con2016

Superconductivity and fluctuation in Ba $_{1 - p}$ K $_{p}$ Fe $_{2}$ As $_{2}$ and Ba(Fe $_{1 - n}$ Co $_{n}$ ) $_{2}$ As $_{2}$

T. BÃ¶hm, R. Hosseinian Ahangharnejhad, D. Jost +9

We study the interplay of fluctuations and superconductivity in BaFe $_{2}$ As $_{2}$ (Ba-122) compounds with Ba and Fe substituted by K ( $p$ doping) and Co ( $n$ doping), respectively. To…

cond-mat.str-el2020

Measuring the imaginary time dynamics of quantum materials

S. Lederer, D. Jost, T. BÃ¶hm +3

Theoretical analysis typically involves imaginary-time correlation functions. Inferring real-time dynamical response functions from this information is notoriously difficult. Howev…

cond-mat.supr-con2018

Phonon anomalies in FeS

A. Baum, A. MilosavljeviÄ, N. LazareviÄ +12

We present results from light scattering experiments on tetragonal FeS with the focus placed on lattice dynamics. We identify the Raman active A1g and B1g phonon modes, a second or…

cond-mat.supr-con2001

Doping dependence of the electronic Raman spectra in cuprates

F. Venturini, M. Opel, R. Hackl +3

We report electronic Raman scattering measurements on Bi $_{2}$ Sr $_{2}$ (Y $_{1 - x}$ Ca $_{x}$ )Cu $_{2}$ O $_{8 + I^´}$ single crystals at different doping levels. The dependence of the spectra on dop…

cond-mat.str-el2013

Alternative route to charge density wave formation in multiband systems

H. -M. Eiter, M. Lavagnini, R. Hackl +7

Charge and spin density waves, periodic modulations of the electron and magnetization densities, respectively, are among the most abundant and non-trivial low-temperature ordered p…

cond-mat.supr-con2010

Pinpointing Gap Minima in Ba(Fe $_{0.94}$ Co $_{0.06})_{2}$ As $_{2}$ \textit{via} Band Structure Calculations and Electronic Raman Scattering

I. I. Mazin, T. P. Devereaux, J. G. Analytis +4

A detailed knowledge of the gap structure for the Fe-pnictide superconductors is still rather rudimentary, with several conflicting reports of either nodes, deep gap minima, or ful…

cond-mat.str-el2021

Probing charge density wave phases and the Mott transition in $1 T$ -TaS $_{2}$ by inelastic light scattering

S. ÄurÄiÄ Mijin, A. Baum, J. Bekaert +9

We present a polarization-resolved, high-resolution Raman scattering study of the three consecutive charge density wave (CDW) regimes in $1 T$ -TaS $_{2}$ single crystals, supported by…

cond-mat.mtrl-sci2007

Vibrational spectra of C60C8H8 and C70C8H8 in the rotor-stator and polymer phases

G. Klupp, F. Borondics, Ã. KovÃ¡ts +6

C60-C8H8 and C70-C8H8 are prototypes of rotor-stator cocrystals. We present infrared and Raman spectra of these materials and show how the rotor-stator nature is reflected in their…

cond-mat.str-el2014

A balancing act: Evidence for a strong subdominant d-wave pairing channel in $B a_{0.6} K_{0.4} F e_{2} A s_{2}$

T. BÃ¶hm, A. F. Kemper, B. Moritz +7

We present an analysis of the Raman spectra of optimally doped $B a_{0.6} K_{0.4} F e_{2} A s_{2}$ based on LDA band structure calculations and the subsequent estimation of effective R…

cond-mat.supr-con2003

Comment on: Nonmonotonic $d_{x^{2} - y^{2}}$ Superconducting Order Parameter in Nd $_{2 - x}$ Ce $_{x}$ CuO $_{4}$

F. Venturini, R. Hackl, U. Michelucci

In a recent letter Blumberg and collaborators claim that a non-monotonic $d_{x^{2} - y^{2}}$ form for the superconducting order parameter is required to explain their Raman scattering me…

cond-mat.str-el2013

Localized states in the Mott insulator Îº-(BEDT-TTF)_2Cu[N(CN)_2]Cl as probed by photoluminescence

N. Drichko, R. Hackl, J. A. Schlueter

We compare the photoluminescence spectra of the low-temperature Mott insulator \etcl (T_{MIT}=40 K) with spectra of metallic Îº-(BEDT-TTF)_2Cu[N(CN)_2]Br, which is superconducting…

physics.ins-det2017

Off-axis parabolic mirror optics for polarized Raman spectroscopy at low temperature

N. Chelwani, D. Hoch, D. Jost +8

We report the development of a detection optics for the integration of Raman scattering and scanning probe microscopy at low temperature based on a parabolic mirror. In our set-up…

cond-mat.supr-con1998

Physical origin of the buckling in CuO $_{2}$ : Electron-phonon coupling and Raman spectra

M. Opel, R. Hackl, T. P. Devereaux +6

It is shown theoretically that the buckling of the CuO $_{2}$ planes in certain cuprate systems can be explained in terms of an electric field across the planes which originates fro…

cond-mat.supr-con2010

Electron interactions and charge ordering in La $_{2 - x}$ Sr $_{x}$ CuO $_{4}$

B. Muschler, W. Prestel, L. Tassini +9

We present results of inelastic light scattering experiments on single-crystalline La $_{2 - x}$ Sr $_{x}$ CuO $_{4}$ in the doping range $0.00 \leq x = p \leq 0.30$ and Tl $_{2}$ Ba $_{2}$ CuO$_{6+Î´}…

cond-mat.supr-con1998

Enhanced Electron-Phonon Coupling and its Irrelevance to High T $_{c}$ Superconductivity

T. P. Devereaux, A. Virosztek, A. Zawadowski +10

It is argued that the origin of the buckling of the CuO $_{2}$ planes in certain cuprates as well as the strong electron-phonon coupling of the $B_{1 g}$ phonon is due to the electri…

cond-mat.str-el2012

An Investigation of Particle-Hole Asymmetry in the Cuprates via Electronic Raman Scattering

B. Moritz, S. Johnston, T. P. Devereaux +7

In this paper we examine the effects of electron-hole asymmetry as a consequence of strong correlations on the electronic Raman scattering in the normal state of copper oxide high…

cond-mat.supr-con2010

Electron-boson glue function derived from electronic Raman scattering

B. Muschler, W. Prestel, E. Schachinger +4

Raman scattering cross sections depend on photon polarization. In the cuprates nodal and antinodal directions are weighted more strongly in $B_{2 g}$ and $B_{1 g}$ symmetry, respecti…

cond-mat.supr-con2009

Band and momentum dependent electron dynamics in superconducting $Ba (F e_{1 - x} C o_{x})_{2} A s_{2}$ as seen via electronic Raman scattering

B. Muschler, W. Prestel, R. Hackl +4

We present details of carrier properties in high quality $Ba (F e_{1 - x} C o_{x})_{2} A s_{2}$ single crystals obtained from electronic Raman scattering. The experiments indicate a stro…

cond-mat.supr-con2002

Raman Scattering versus Infrared Conductivity: Evidence for one-dimensional Conduction in La_{2-x}Sr_{x}CuO_{4}

F. Venturini, Q. -M. Zhang, R. Hackl +6

Raman and Infrared (IR) spectra of an underdoped La_{1.90}Sr_{0.10}CuO_{4} single crystal have been measured as a function of temperature. Both techniques provide unconventional lo…

cond-mat.str-el2014

A Raman study of the temperature and magnetic field dependence of electronic and lattice properties in MnSi

H. -M. Eiter, P. Jaschke, R. Hackl +3

The temperature and magnetic field dependence of lattice and carrier excitations in MnSi is studied in detail using inelastic light scattering. The pure symmetry components of the…

cond-mat.supr-con2002

Observation of an unconventional metal-insulator transition in overdoped CuO_2 compounds

F. Venturini, M. Opel, T. P. Devereaux +7

The electron dynamics in the normal state of Bi $_{2}$ Sr $_{2}$ CaCu $_{2}$ O $_{8 + I^´}$ is studied by inelastic light scattering over a wide range of doping. A strong anisotropy of the electro…

cond-mat.supr-con2010

Quantitative comparison of single- and two-particle properties in the cuprates

W. Prestel, F. Venturini, B. Muschler +10

We explore the strong variations of the electronic properties of copper-oxygen compounds across the doping phase diagram in a quantitative way. To this end we calculate the electro…

cond-mat.supr-con2016

Probing the pairing interaction and multiple Bardasis-Schrieffer modes using Raman spectroscopy

S. Maiti, T. A. Maier, T. Boehm +2

In unconventional superconductors, understanding the form of the pairing interaction is the primary goal. In this regard, Raman spectroscopy is a very useful tool, as it identifies…

cond-mat.supr-con2021

Calculation of an enhanced A1g symmetry mode induced by Higgs oscillations in the Raman spectrum of high-temperature cuprate superconductors

M. Puviani, A. Baum, S. Ono +3

In superconductors the Anderson-Higgs mechanism allows for the existence of a collective amplitude (Higgs) mode which can couple to eV-light mainly in a non-linear Raman-like proce…

cond-mat.supr-con2010

Unravelling the glue and the competing order in superconducting cuprates

S. Caprara, C. Di Castro, B. Muschler +6

We present Raman scattering experiments in $L a_{2 - x} S r_{x} Cu O_{4}$ single crystals at various doping levels x and compare the results with theoretical predictions obtained assumi…

Publications (39)

Signatures of nematic quantum critical fluctuations in the Raman spectra of lightly doped cuprates

Interplay of lattice, electronic and spin degrees of freedom in detwinned BaFe2​As2​: a Raman scattering study

Dynamical Properties of Charged Stripes in La_{2-x}Sr_xCuO_4

Spectral signatures of critical charge and spin fluctuations in cuprates

Carrier relaxation, pseudogap, and superconducting gap in high-Tc cuprates: A Raman scattering study

Chiral electronic excitations and strong electron-phonon coupling to Weyl fermions in the Kagome semimetal Co3​Sn2​S2​

First-Order Type Effects in YBa2​Cu3​O6+x​ at the Onset of Superconductivity

Evolution of lattice, spin, and charge properties across the phase diagram of FeSe1−x​Sx​

Raman scattering evidence for a cascade-like evolution of the charge-density-wave collective amplitude mode

Pair breaking versus symmetry breaking: Origin of the Raman modes in superconducting cuprates

Inelastic Light Scattering From Correlated Electrons

Relationship among superconductivity, pseudogap, and high-energy magnetic fluctuations in a model high-Tc superconductor from electronic Raman scattering

Femtosecond Quasiparticle and Phonon Dynamics in Superconducting YBa2Cu3O7 Studied by Wideband Terahertz Spectroscopy

Light scattering study of low-energy vibrational excitations in the metallic glass Ni67​Zr33​ using electronic Raman scattering

Superconductivity and fluctuation in Ba1−p​Kp​Fe2​As2​ and Ba(Fe1−n​Con​)2​As2​

Measuring the imaginary time dynamics of quantum materials

Phonon anomalies in FeS

Doping dependence of the electronic Raman spectra in cuprates

Alternative route to charge density wave formation in multiband systems

Pinpointing Gap Minima in Ba(Fe0.94​Co0.06​)2​As2​ \textit{via} Band Structure Calculations and Electronic Raman Scattering

Probing charge density wave phases and the Mott transition in 1T-TaS2​ by inelastic light scattering

Vibrational spectra of C60C8H8 and C70C8H8 in the rotor-stator and polymer phases

A balancing act: Evidence for a strong subdominant d-wave pairing channel in Ba0.6​K0.4​Fe2​As2​

Comment on: Nonmonotonic dx2−y2​ Superconducting Order Parameter in Nd2−x​Cex​CuO4​

Localized states in the Mott insulator Îº-(BEDT-TTF)_2Cu[N(CN)_2]Cl as probed by photoluminescence

Off-axis parabolic mirror optics for polarized Raman spectroscopy at low temperature

Physical origin of the buckling in CuO2​: Electron-phonon coupling and Raman spectra

Electron interactions and charge ordering in La2−x​Srx​CuO4​

Enhanced Electron-Phonon Coupling and its Irrelevance to High Tc​ Superconductivity

An Investigation of Particle-Hole Asymmetry in the Cuprates via Electronic Raman Scattering

Electron-boson glue function derived from electronic Raman scattering

Band and momentum dependent electron dynamics in superconducting Ba(Fe1−x​Cox​)2​As2​ as seen via electronic Raman scattering

Raman Scattering versus Infrared Conductivity: Evidence for one-dimensional Conduction in La_{2-x}Sr_{x}CuO_{4}

A Raman study of the temperature and magnetic field dependence of electronic and lattice properties in MnSi

Observation of an unconventional metal-insulator transition in overdoped CuO_2 compounds

Quantitative comparison of single- and two-particle properties in the cuprates

Probing the pairing interaction and multiple Bardasis-Schrieffer modes using Raman spectroscopy

Calculation of an enhanced A1g symmetry mode induced by Higgs oscillations in the Raman spectrum of high-temperature cuprate superconductors

Unravelling the glue and the competing order in superconducting cuprates

Interplay of lattice, electronic and spin degrees of freedom in detwinned BaFe $_{2}$ As $_{2}$ : a Raman scattering study

Chiral electronic excitations and strong electron-phonon coupling to Weyl fermions in the Kagome semimetal Co $_{3}$ Sn $_{2}$ S $_{2}$

First-Order Type Effects in YBa $_{2}$ Cu $_{3}$ O $_{6 + x}$ at the Onset of Superconductivity

Evolution of lattice, spin, and charge properties across the phase diagram of FeSe $_{1 - x}$ S $_{x}$

Light scattering study of low-energy vibrational excitations in the metallic glass Ni $_{67}$ Zr $_{33}$ using electronic Raman scattering

Superconductivity and fluctuation in Ba $_{1 - p}$ K $_{p}$ Fe $_{2}$ As $_{2}$ and Ba(Fe $_{1 - n}$ Co $_{n}$ ) $_{2}$ As $_{2}$

Pinpointing Gap Minima in Ba(Fe $_{0.94}$ Co $_{0.06})_{2}$ As $_{2}$ \textit{via} Band Structure Calculations and Electronic Raman Scattering

Probing charge density wave phases and the Mott transition in $1 T$ -TaS $_{2}$ by inelastic light scattering

A balancing act: Evidence for a strong subdominant d-wave pairing channel in $B a_{0.6} K_{0.4} F e_{2} A s_{2}$

Comment on: Nonmonotonic $d_{x^{2} - y^{2}}$ Superconducting Order Parameter in Nd $_{2 - x}$ Ce $_{x}$ CuO $_{4}$

Physical origin of the buckling in CuO $_{2}$ : Electron-phonon coupling and Raman spectra

Electron interactions and charge ordering in La $_{2 - x}$ Sr $_{x}$ CuO $_{4}$

Enhanced Electron-Phonon Coupling and its Irrelevance to High T $_{c}$ Superconductivity

Band and momentum dependent electron dynamics in superconducting $Ba (F e_{1 - x} C o_{x})_{2} A s_{2}$ as seen via electronic Raman scattering