44 citations · 137 across the 18 of their papers we have counts for
18 papers
Momentum-resolved EELS study of collective charge excitations in 1-TaS
Farzaneh Hoveyda-Marashi, Xuefei Guo, Caitlin Kengle +5
We use momentum-resolved electron energy-loss spectroscopy (M-EELS) to study the low-energy charge excitations of 1-TaS across the nearly commensurate-to-commensurate charge…
Reexamining the strange metal charge response with transmission inelastic electron scattering
Niels de Vries, Eric Hoglund, Dipanjan Chaudhuri +8
The strange metal remains one of the great unsolved problems for 21st century science. Since the early development of the marginal Fermi liquid phenomenology, it has been clear tha…
Comparative analysis of plasmon modes in layered Lindhard metals and strange metals
Niels de Vries, Jin Chen, Eric Hoglund +4
The enigmatic strange metal remains one of the central unsolved problems of 21st century science. Understanding this phase of matter requires knowledge of the momentum- and energy-…
Charge order-driven nematicity in the nickel-pnictide superconductor BaSrNiAs
Thomas Johnson, Camille Bernal-Choban, Sangjun Lee +8
Nematic order refers to the spontaneous breaking of rotational symmetry while preserving translational symmetry. First identified in classical liquid crystals, nematic order arises…
In-plane anisotropy of charge density wave fluctuations in 1-TiSe
Xuefei Guo, Anshul Kogar, Jans Henke +17
We report measurements of anisotropic triple- charge density wave (CDW) fluctuations in the transition metal dichalcogenide 1-TiSe over a large volume of reciprocal space…
Quantum Fisher Information Reveals UV-IR Mixing in the Strange Metal
David Bałut, Xuefei Guo, Niels de Vries +4
The density-density response in optimally doped BiSrCaCuO has recently been shown to exhibit conformal symmetry. Using, the experimentally inferred conformal dy…
Conformally invariant charge fluctuations in a strange metal
Xuefei Guo, Jin Chen, Farzaneh Hoveyda-Marashi +11
The strange metal is a peculiar phase of matter in which the electron scattering rate, , which determines the electrical resistance, is universal across a…
Measurement of the dynamic charge susceptibility near the charge density wave transition in ErTe
Dipanjan Chaudhuri, Qianni Jiang, Xuefei Guo +9
A charge density wave (CDW) is a phase of matter characterized by a periodic modulation of the valence electron density accompanied by a distortion of the lattice structure. The mi…
Absence of a bulk charge density wave signature in x-ray measurements of UTe
Caitlin S. Kengle, Dipanjan Chaudhuri, Xuefei Guo +12
The long-sought pair density wave (PDW) is an exotic phase of matter in which charge density wave (CDW) order is intertwined with the amplitude or phase of coexisting, superconduct…
Consistency between reflection M-EELS and optical spectroscopy measurements of the long-wavelength density response of BiSrCaCuO
Jin Chen, Xuefei Guo, Christian Boyd +11
The density fluctuation spectrum captures many fundamental properties of strange metals. Using momentum-resolved electron energy-loss spectroscopy (M-EELS), we recently showed that…
Doping-dependence of the electron-phonon coupling in two families of bilayer superconducting cuprates
Yingying Peng, Leonardo Martinelli, Qizhi Li +21
While electron-phonon coupling (EPC) is crucial for Cooper pairing in conventional superconductors, its role in high- superconducting cuprates is debated. Using resonant inela…
Generic character of charge and spin density waves in superconducting cuprates
Sangjun Lee, Edwin W. Huang, Thomas A. Johnson +19
Understanding the nature of charge density waves (CDW) in cuprate superconductors has been complicated by material specific differences. A striking example is the opposite doping d…
Kramers-Weyl fermions in the chiral charge density wave material (TaSe)I
Soyeun Kim, Robert C. McKay, Nina Bielinski +11
The quasi-one-dimensional chiral charge density wave (CDW) material (TaSe)I has been recently predicted to host Kramers-Weyl (KW) fermions which should exist in the vicinit…
Observation of orbital order in the Van der Waals material 1T-TiSe2
Yingying Peng, Xuefei Guo, Qian Xiao +11
Besides magnetic and charge order, regular arrangements of orbital occupation constitute a fundamental order parameter of condensed matter physics. Even though orbital order is dif…
Search for order near a forbidden Bragg position in BiSrCaCuO with resonant soft x-ray scattering
Xuefei Guo, Sangjun Lee, Thomas A. Johnson +13
Identifying what broken symmetries are present in the cuprates has become a major area of research. Many authors have reported evidence for so-called "" order that involv…
Multiple charge density waves and superconductivity nucleation at antiphase domain walls in the nematic pnictide BaSrNiAs
Sangjun Lee, John Collini, Stella X. -L. Sun +6
How superconductivity interacts with charge or nematic order is one of the great unresolved issues at the center of research in quantum materials. BaSrNiAs$_{2}…
Observation of Pines' Demon in SrRuO
A. A. Husain, E. W. Huang, M. Mitrano +11
The characteristic excitation of a metal is its plasmon, which is a quantized collective oscillation of its electron density. In 1956, David Pines predicted that a distinct type of…
Detecting Many-Body-Localization Length with Cold Atoms
Xuefei Guo, Xiaopeng Li
Considering ultracold atoms in optical lattices, we propose experimental protocols to study many-body localization (MBL) length and criticality in quench dynamics. Through numerica…