317 citations · 1k across the 33 of their papers we have counts for
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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…
Scale-invariant magnetic anisotropy in RuCl at high magnetic fields
K. A. Modic, Ross D. McDonald, J. P. C. Ruff +13
In RuCl, inelastic neutron scattering and Raman spectroscopy reveal a continuum of non-spin-wave excitations that persists to high temperature, suggesting the presence of a spi…
Nematic quantum criticality in an Fe-based superconductor revealed by strain-tuning
Thanapat Worasaran, Matthias S. Ikeda, Johanna C. Palmstrom +3
Quantum criticality has been invoked as being essential to the understanding of a wide range of exotic electronic behavior, including heavy Fermion and unconventional superconducti…
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…
Comparison of temperature and doping dependence of nematic susceptibility near a putative nematic quantum critical point
J. C. Palmstrom, P. Walmsley, J. A. W. Straquadine +4
Strong electronic nematic fluctuations have been discovered near optimal doping for several families of Fe-based superconductors, motivating the search for a possible link between…
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…
Imaging Nematic Transitions in Iron-Pnictide Superconductors with a Quantum Gas
Fan Yang, Stephen F. Taylor, Stephen D. Edkins +3
The SQCRAMscope is a recently realized Scanning Quantum CRyogenic Atom Microscope that utilizes an atomic Bose-Einstein condensate to measure magnetic fields emanating from solid-s…
Signatures of Anelastic Domain Relaxation in Ba(FeCo)As Investigated by Mechanical Modulation of Resistivity
Alexander T. Hristov, Matthias S. Ikeda, Johanna C. Palmstrom +1
The resistive response of Ba(FeCo)As to AC mechanical deformation is considered in the multi-domain state. This resistance change depends both upon the an…
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…
Scale-Invariance of a Spin Liquid in High Magnetic Fields
K. A. Modic, Ross D. McDonald, J. P. C. Ruff +13
In RuCl, inelastic neutron scattering and Raman spectroscopy reveal a continuum of non-spin-wave excitations that persists to high temperature, suggesting the presence of a spi…
Elastoresistive and Elastocaloric Anomalies at Magnetic and Electronic-Nematic Critical Points
Alexander T. Hristov, Matthias S. Ikeda, Johanna C. Palmstrom +2
Using Ba(FeCo)As as an exemplar material exhibiting second order electronic-nematic and antiferromagnetic transitions, we present measurements that re…
Measurement of Elastoresistivity at Finite Frequency by Amplitude Demodulation
Alexander T. Hristov, Johanna C. Palmstrom, Joshua A. W. Straquadine +3
Elastoresistivity, the relation between resistivity and strain, can elucidate subtle properties of the electronic structure of a material and is an increasingly important tool for…
Critical divergence of the symmetric () nonlinear elastoresistance near the nematic transition in an iron-based superconductor
Johanna C. Palmstrom, Alexander T. Hristov, Steven A. Kivelson +2
We report the observation of a nonlinear elastoresistivity response for the prototypical underdoped iron pnictide Ba(FeCo)As. Our measurements reveal a…
Measurement of the and components of the elastoresistivity tensor for tetragonal materials via transverse resistivity configurations
M. C. Shapiro, A. T. Hristov, J. C. Palmstrom +2
The elastoresistivity tensor relates changes in resistivity to strains experienced by a material. As a fourth-rank tensor, it contains considerably more information abo…