333 citations · 752 across the 25 of their papers we have counts for
19 papers · 1 filter
Strain-induced structural change and nearly-commensurate diffuse scattering in the model high-temperature superconductor HgBaCuO
Mai Ye, Wenshan Hong, Tom Lacmann +9
We investigate the strain response of underdoped HgBaCuO (Hg1201), by synchrotron X-ray diffraction and corresponding simulations of thermal diffuse scattering. The com…
Charge density waves and soft phonon evolution in the superconductor BaNi(AsP)
Tom Lacmann, Sofia-Michaela Souliou, Fabian Henssler +8
The superconductor BaNiAs exhibits a soft-phonon-driven, incommensurate charge density wave (I-CDW) which is accompanied by a small orthorhombic structural phase transition…
Using strain to uncover the interplay between two- and three-dimensional charge density waves in high-temperature superconducting YBaCuO
Igor Vinograd, Sofia Michaela Souliou, Amir-Abbas Haghighirad +14
Uniaxial pressure provides an efficient approach to control the competition between charge density waves (CDWs) and superconductivity in underdoped YBaCuO. I…
Bosonic excitation spectra of superconducting and extracted from scanning tunneling spectra
Thomas Gozlinski, Mirjam Henn, Thomas Wolf +3
A detailed interpretation of scanning tunneling spectra obtained on unconventional superconductors enables one to gain information on the pairing boson. Decisive for this approach…
Charge-density-wave transitions, phase diagram, soft phonon and possible electronic nematicity: a thermodynamic investigation of BaNi2(As,P)2
Christoph Meingast, Anmol Shukla, Liran Wang +9
A detailed investigation of BaNi2(As,P)2 single crystals using high-resolution thermal-expansion, heat-capacity,Young-modulus and resistivity measurements is presented. The experim…
Hard antinodal gap revealed by quantum oscillations in the pseudogap regime of underdoped high- superconductors
Mate Hartstein, Yu-Te Hsu, Kimberly A. Modic +12
An understanding of the missing antinodal electronic excitations in the pseudogap state is essential for uncovering the physics of the underdoped cuprate high temperature supercond…
Orbitally resolved superconductivity in real space: FeSe
Fang Yang, Jasmin Jandke, Peter Adelmann +7
Multi-orbital superconductors combine unconventional pairing with complex band structures, where different orbitals in the bands contribute to a multitude of superconducting gaps.…
Polarization resolved Cu -edge resonant inelastic x-ray scattering of orbital and spin excitations in NdBaCuO
R. Fumagalli, L. Braicovich, M. Minola +14
High resolution resonant inelastic x-ray scattering (RIXS) has proven particularly effective in the determination of crystal field and spin excitations in cuprates. Its strength li…
Coupling between dynamic magnetic and charge-order correlations in the cuprate superconductor NdCeCuO
E. H. da Silva Neto, M. Minola, B. Yu +14
Charge order has now been observed in several cuprate high-temperature superconductors. We report a resonant inelastic x-ray scattering experiment on the electron-doped cuprate Nd$…
Incommensurate phonon anomaly and the nature of charge density waves in cuprates
H. Miao, D. Ishikawa, R. Heid +6
While charge density wave (CDW) instabilities are ubiquitous to superconducting cuprates, the different ordering wavevectors in various cuprate families have hampered a unified des…
On the phonon dispersion relation of single-crystalline --FeSe
Khalil Zakeri, Tobias Engelhardt, Thomas Wolf +1
We report on the phonon spectrum probed at the --FeSe(001) surface by means of high-resolution electron energy-loss spectroscopy (HREELS). Single crystals of --FeSe are cleav…
Inelastic x-ray scattering investigations of lattice dynamics in SmFeAsOF superconductors
M. Le Tacon, T. R. Forrest, Ch. Rüegg +10
We report measurements of the phonon density of states as measured with inelastic x-ray scattering in SmFeAsOF powders. An unexpected strong renormalization of phonon b…
Phonon Density of States in Nd(OF)FeAs
M. Le Tacon, M. Krisch, A. Bosak +2
We report measurements of the phonon density-of-states in iron oxypnictide superconductors by inelastic x-ray scattering. A good agreement with ab-initio calculations that do not t…
The nodal gap component as a good candidate for the superconducting order parameter in cuprates
W. Guyard, A. Sacuto, M. Cazayous +4
Although more than twenty years have passed since the discovery of high temperature cuprate superconductivity, the identification of the superconducting order parameter is still un…
Investigations on the relationship between and the superconducting gap under magnetic and non-magnetic impurity substitutions in YBaCuO
M. Le Tacon, A. Sacuto, Y. Gallais +2
We report electronic Raman scattering measurements on optimally doped YBa2Cu3O7 where Zn or Ni impurities have been substituted by Cu. Using Raman selection rules, we have probed t…
Two Energy Scales and two Quasiparticle Dynamics in the Superconducting State of Underdoped Cuprates
M. Le Tacon, A. Sacuto, A. Georges +4
The superconducting state of underdoped cuprates is often described in terms of a single energy-scale, associated with the maximum of the (d-wave) gap. Here, we report on electroni…
Coupling between quasiparticles and a bosonic mode in the normal state of HgBaCuO
Y. Gallais, M. Le Tacon, A. Sacuto +1
We report a doping dependent study of the quasiparticles dynamics in HgBaCuO via Electronic Raman Scattering. A well-defined energy scale is found in the normal state d…
Effects of Magnetic and non-Magnetic Impurities on the Superconducting State of YBaCuO
M. Le Tacon, A. Sacuto, Y. Gallais +3
We report Electronic Raman Scattering measurements on optimally doped Zn and Ni substituted YBCO in A and B channels. We show that the superconducting gap energy is i…
Two Distinct Electronic Contributions in the Fully Symmetric Raman Response of High Cuprates
M. Le Tacon, A. Sacuto, D. Colson
We show by non resonant effect in HgBaCuO (Hg-1201)and by Zn substitutions in YBaCuO (Y-123) compounds that the fully symmetric Raman spectrum has two d…