94 citations · 678 across the 19 of their papers we have counts for
18 papers
Spectroscopic evidence for topological band structure in FeTeSe
Y. -F. Li, S. -D. Chen, M. Garcia-Diez +12
FeTeSe(FTS) occupies a special spot in modern condensed matter physics at the intersections of electron correlation, topology, and unconventional superconductivit…
Expanding the momentum field of view in angle-resolved photoemission systems with hemispherical analyzers
Nicolas Gauthier, Jonathan A. Sobota, Heike Pfau +6
In photoelectron spectroscopy, the measured electron momentum range is intrinsically related to the excitation photon energy. Low photon energies eV are commonly encountered…
Anisotropic quasiparticle coherence in nematic BaFeAs studied with strain-dependent ARPES
H. Pfau, S. D. Chen, M. Hashimoto +7
The hallmark of nematic order in iron-based superconductors is a resistivity anisotropy but it is unclear to which extent quasiparticle dispersions, lifetimes and coherence contrib…
Quantum well states in fractured crystals of the heavy fermion material CeCoIn
Nicolas Gauthier, Jonathan A. Sobota, Makoto Hashimoto +6
Quantum well states appear in metallic thin films due to the confinement of the wave function by the film interfaces. Using angle-resolved photoemission spectroscopy, we unexpected…
Tuning time and energy resolution in time-resolved photoemission spectroscopy with nonlinear crystals
Alexandre Gauthier, Jonathan A. Sobota, Nicolas Gauthier +5
Time- and angle-resolved photoemission spectroscopy is a powerful probe of electronic band structures out of equilibrium. Tuning time and energy resolution to suit a particular sci…
Low work function in the 122-family of iron-based superconductors
H. Pfau, H. Soifer, J. A. Sobota +8
We determine the work functions of the iron arsenic compounds FeAs () using photoemission spectroscopy to be 2.7 eV for CaFeAs, 1.8 eV for…
Momentum Dependence of the Nematic Order Parameter in Iron-Based Superconductors
H. Pfau, S. D. Chen, M. Yi +11
The momentum dependence of the nematic order parameter is an important ingredient in the microscopic description of iron-based high-temperature superconductors. While recent report…
The Nematic Energy Scale and the Missing Electron Pocket in FeSe
Ming Yi, Heike Pfau, Yan Zhang +12
Superconductivity emerges in proximity to a nematic phase in most iron-based superconductors. It is therefore important to understand the impact of nematicity on the electronic str…
Detailed band structure of twinned and detwinned BaFeAs studied with angle-resolved photoemission spectroscopy
H. Pfau, C. R. Rotundu, J. C. Palmstrom +6
We study the band structure of twinned and detwinned BaFeAs using angle-resolved photoemission spectroscopy (ARPES). The combination of measurements in the ordered and norm…
Interplay between unconventional superconductivity and heavy-fermion quantum criticality: CeCuSi versus YbRhSi
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…
Cascade of magnetic field induced Lifshitz transitions in the ferromagnetic Kondo lattice material YbNi4P2
H. Pfau, R. Daou, S. Friedemann +11
A ferromagnetic quantum critical point is thought not to exist in two and three-dimensional metallic systems yet is realized in the Kondo lattice compound YbNi4(P,As)2, possibly du…
Superconducting gap structure of the skutterudite LaPt4Ge12 probed by specific heat and thermal transport
Heike Pfau, Michael Nicklas, Ulrike Stockert +5
We investigated the superconducting order parameter of the filled skutterudite LaPt4Ge12, with a transition temperature of Tc = 8.3 K. To this end, we performed temperature and mag…
Heavy fermion and Kondo lattice behavior in the itinerant ferromagnet CeCrGe3
Debarchan Das, T. Gruner, H. Pfau +4
Physical properties of polycrystalline CeCrGe and LaCrGe have been investigated by x-ray absorption spectroscopy, magnetic susceptibility , isothermal magnetizati…
Evidence for a Kondo destroying quantum critical point in YbRh2Si2
Frank Steglich, Heike Pfau, Stefan Lausberg +10
The heavy-fermion metal YbRhSi is a weak antiferromagnet below K. Application of a low magnetic field T () is sufficient to conti…
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…
Interplay between Kondo suppression and Lifshitz transitions in YbRhSi 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…
Thermoelectric transport across the metamagnetic transition of CeRu2Si2
Heike Pfau, Ramzy Daou, Manuel Brando +1
We have measured the thermopower across the metamagnetic transition of the heavy fermion compound CeRu2Si2 at temperatures down to 0.1K and magnetic fields up to 11.5T. We find a l…
Ferromagnetic Quantum Criticality in the Quasi-One-Dimensional Heavy Fermion Metal YbNi4P2
C Krellner, S Lausberg, A Steppke +7
We present a new Kondo-lattice system, YbNi4P2, which is a clean heavy-fermion metal with a severely reduced ferromagnetic ordering temperature at T_C=0.17K, evidenced by distinct…