597 citations · 2.6k across the 47 of their papers we have counts for
47 papers
Geometrical frustration versus Kitaev interactions in BaCo(AsO)
Thomas Halloran, Félix Desrochers, Emily Z. Zhang +12
Recently, Co-based honeycomb magnets have been proposed as promising candidate materials to host the Kitaev spin liquid state. One of the front-runners is BaCo(AsO) (BC…
Effect of iron vacancies on the magnetic order and spin dynamics of the spin ladder BaFeSSe
Zengjia Liu, Xiao-Sheng Ni, Lisi Li +11
Quasi-one-dimensional iron chalcogenides possess various magnetic states depending on the lattice distortion, electronic correlations, and presence of defects. We present neutron d…
Non-Thermal Emergence of an Orbital-Selective Mott Phase in FeTeSe
Jianwei Huang, Rong Yu, Zhijun Xu +15
Electronic correlation is of fundamental importance to high temperature superconductivity. Iron-based superconductors are believed to possess moderate correlation strength, which c…
Phase Diagram of -RuCl in an in-plane Magnetic Field
J. A. Sears, Y. Zhao, Z. Xu +2
The low-temperature magnetic phases in the layered honeycomb lattice material -RuCl have been studied as a function of in-plane magnetic field. In zero field this material o…
Successive field-induced transitions in BiFeO around room temperature
Shiro Kawachi, Atsushi Miyake, Toshimitsu Ito +8
The effects of high magnetic fields applied perpendicular to the spontaneous ferroelectric polarization on single crystals of BiFeO were investigated through magnetization, mag…
Modeling Tunneling for the Unconventional Superconducting Proximity Effect
Parisa Zareapour, Jianwei Xu, Shu Yang F. Zhao +5
Recently there has been reinvigorated interest in the superconducting proximity effect, driven by predictions of the emergence of Majorana fermions. To help guide this search, we h…
Thermal evolution of antiferromagnetic correlations and tetrahedral bond angles in superconducting FeTeSe
Zhijun Xu, J. A. Schneeloch, Jinsheng Wen +9
It has recently been demonstrated that dynamical magnetic correlations measured by neutron scattering in iron chalcogenides can be described with models of short-range correlations…
Phonon coupling to dynamic short-range polar order in a relaxor ferroelectric near the morphotropic phase boundary
John A. Schneeloch, Zhijun Xu, B. Winn +4
We report neutron inelastic scattering experiments on single crystal PbMgNbO doped with 32\% PbTiO, a relaxor ferroelectric that lies close to the morph…
Power Law Liquid - A Unified Form of Low-Energy Nodal Electronic Interactions in Hole Doped Cuprate Superconductors
T. J. Reber, X. Zhou, N. C. Plumb +13
The strange-metal phase of the cuprate high temperature superconductors, above where the superconductivity sets in as a function of temperature, is widely considered more exotic an…
Coordination of the energy and temperature scales of pairing across the doping phase diagram of BiSrCaCuO
T. J. Reber, S. Parham, N. C. Plumb +15
Using a new variant of photoelectron spectroscopy, we measure the homogeneous near-nodal pairing () and pair-breaking self-energy () processes for a wide range of doping le…
"Forbidden" phonon: dynamical signature of bond symmetry breaking in the iron chalcogenides
David M. Fobes, Igor A. Zaliznyak, John M. Tranquada +8
Investigation of the inelastic neutron scattering spectra in FeTeSe near a signature wave vector for the bond-order wave (BOW) formatio…
Pairing, pair-breaking, and their roles in setting the Tc of cuprate high temperature superconductors
T. J. Reber, S. Parham, N. C. Plumb +13
The key ingredients in any superconductor are the Cooper pairs, in which two electrons combine to form a composite boson. In all conventional superconductors the pairing strength a…
Substitution of Ni for Fe in superconducting FeTeSe depresses the normal-state conductivity but not the magnetic spectral weight
Jinghui Wang, Ruidan Zhong, Shichao Li +12
We have performed systematic resistivity and inelastic neutron scattering measurements on FeNiTeSe samples to study the impact of Ni substitution on…
Nanoscale interplay of strain and doping in a high-temperature superconductor
Ilija Zeljkovic, Jouko Nieminen, Dennis Huang +10
The highest temperature superconductors are electronically inhomogeneous at the nanoscale, suggesting the existence of a local variable which could be harnessed to enhance the supe…
Evidence for a New Excitation at the Interface Between a High-Tc Superconductor and a Topological Insulator
Parisa Zareapour, Alex Hayat, Shu Yang F. Zhao +10
High-temperature superconductors exhibit a wide variety of novel excitations. If contacted with a topological insulator, the lifting of spin rotation symmetry in the surface states…
Low-energy phonons and superconductivity in SnInTe
Zhijun Xu, J. A. Schneeloch, Ruidan Zhong +6
We present neutron scattering measurements on low-energy phonons from a superconducting (~K) SnInTe single crystal sample. The longitudinal acoustic ph…
Neutron inelastic scattering measurements of low energy phonons in the multiferroic BiFeO3
John A. Schneeloch, Zhijun Xu Jinsheng Wen, P. M. Gehring +11
We present neutron inelastic scattering measurements of the low-energy phonons in single crystal BiFeO3. The dispersions of the three acoustic phonon modes (LA along [100], TA1 alo…
The Origin and Non-quasiparticle Nature of Fermi Arcs in BiSrCaCuO
T. J. Reber, N. C. Plumb, Z. Sun +12
A Fermi arc is a disconnected segment of a Fermi surface observed in the pseudogap phase of cuprate superconductors. This simple description belies the fundamental inconsistency in…
Low energy magnetic excitations from the Fe(Ni/Cu)TeSe system
Zhijun Xu, Jinsheng Wen, J. Schneeloch +5
We report neutron scattering measurements on low energy (~meV) magnetic excitations from a series of Fe(Ni/Cu)TeSe samples which belong…
Measurement of the spectral line shapes for orbital excitations in the Mott insulator CoO using high-resolution resonant inelastic x-ray scattering
L. Andrew Wray, J. Li, Z. Q. Qiu +8
We establish the spectral line shape of orbital excitations created by resonant inelastic X-ray scattering for the model Mott insulator CoO. Improved experimental energy resolution…
Ubiquitous Interplay between Charge Ordering and High-Temperature Superconductivity in Cuprates
Eduardo H. da Silva Neto, Pegor Aynajian, Alex Frano +11
Besides superconductivity, copper-oxide high temperature superconductors are susceptible to other types of ordering. We use scanning tunneling microscopy and resonant elastic x-ray…
Enhanced low-energy magnetic excitations via suppression of the itinerancy in Fe0.98-zCuzTe0.5Se0.5
Jinsheng Wen, Shichao Li, Zhijun Xu +12
We have performed resistivity and inelastic neutron scattering measurements on three samples of Fe0.98-zCuzTe0.5Se0.5 with z = 0, 0.02, and 0.1. It is found that with increasing Cu…
Fully gapped topological surface states in BiSe films induced by a d-wave high-temperature superconductor
Eryin Wang, Hao Ding, Alexei V. Fedorov +17
Topological insulators are a new class of materials, that exhibit robust gapless surface states protected by time-reversal symmetry. The interplay between such symmetry-protected t…
Neutron Scattering Evidence for a Periodically-Modulated Superconducting Phase in the Underdoped Cuprate LaBaCuO
Zhijun Xu, C. Stock, Songxue Chi +4
The role of antiferromagnetic spin correlations in high-temperature superconductors remains a matter of debate. We present inelastic neutron scattering evidence that gapless spin f…