368 citations · 1.7k across the 38 of their papers we have counts for
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Frustrated magnetic interactions and quenched spin fluctuations in CrAs
Yayuan Qin, Yao Shen, Yiqing Hao +7
The discovery of pressure-induced superconductivity in helimagnets (CrAs, MnP) has attracted considerable interest in understanding the relationship between complex magnetism and u…
Local orthorhombic lattice distortions in the paramagnetic tetragonal phase of superconducting NaFeNiAs
Weiyi Wang, Yu Song, Chongde Cao +9
Understanding the interplay between nematicity, magnetism and superconductivity is pivotal for elucidating the physics of iron-based superconductors. Here we use neutron scattering…
Local breaking of four-fold rotational symmetry by short-range magnetic order in heavily overdoped Ba(FeCu)As
Weiyi Wang, Yu Song, Ding Hu +6
We investigate Cu-doped Ba(FeCu)As with transport, magnetic susceptibility, and elastic neutron scattering measurements. In the heavily Cu-doped regime where lo…
Spin excitations and the Fermi surface of superconducting FeS
Haoran Man, Jiangang Guo, Rui Zhang +17
High-temperature superconductivity occurs near antiferromagnetic instabilities and nematic state. Debate remains on the origin of nematic order in FeSe and its relation with superc…
Electron doping evolution of the neutron spin resonance in NaFeCoAs
Chenglin Zhang, Weicheng Lv, Guotai Tan +8
Neutron spin resonance, a collective magnetic excitation coupled to superconductivity, is one of the most prominent features shared by a broad family of unconventional superconduct…
Strain-activated structural anisotropy in BaFe2As2
Xiang Chen, Leland Harriger, Athena Sefat +2
High-resolution single crystal neutron diffraction measurements are presented probing the magnetostructural response to uniaxial pressure in the iron pnictide parent system BaFe2As…
Spin Waves and Spatially Anisotropic Exchange Interactions in the Stripe Antiferromagnet RbFeS
Meng Wang, P. Valdivia, Ming Yi +12
An inelastic neutron scattering study of the spin waves corresponding to the stripe antiferromagnetic order in insulating RbFeS throughout the Brillouin zone is…
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…
Structural and Magnetic Phase Diagram of CrAs and its Relationship with Pressure-induced Superconductivity
Yao Shen, Qisi Wang, Yiqing Hao +11
Most unconventional superconductors, including cuprates and iron-based superconductors, are derived from chemical doping or application of pressure on their collinearly magnetic-or…
Short-range cluster spin glass near optimal superconductivity in BaFeNiAs
Xingye Lu, David W. Tam, Chenglin Zhang +9
High-temperature superconductivity in iron pnictides occurs when electrons are doped into their antiferromagnetic (AF) parent compounds. In addition to inducing superconductivity,…
Distinguishing and electron pairing symmetries by neutron spin resonance in superconducting NaFeCoAs
Chenglin Zhang, H. -F. Li, Yu Song +17
A determination of the superconducting (SC) electron pairing symmetry forms the basis for establishing a microscopic mechansim for superconductivity. For iron pnictide superconduct…
Paramagnetic spin excitations in insulating RbFeSe
Miaoyin Wang, Xingye Lu, R. A. Ewings +6
We use neutron scattering to study temperature dependent spin excitations in insulating antiferromagnetic (AF) RbFeSe. In the low-temperature AF state, spin wav…
Temperature dependence of the paramagnetic spin excitations in BaFeAs
Leland W. Harriger, Mengshu Liu, Huiqian Luo +4
We use inelastic neutron scattering to study temperature dependence of the paramagnetic spin excitations in iron pnictide BaFeAs throughout the Brillouin zone. In contrast…
Temperature dependence of the resonance and low energy spin excitations in superconducting FeTeSe
Leland W. Harriger, J. Lipscombe, Chenglin Zhang +5
We use inelastic neutron scattering to study the temperature dependence of the low-energy spin excitations in single crystals of superconducting FeTeSe ( K)…
Nature of magnetic excitations in superconducting BaFeNiAs
Mengshu Liu, Leland W. Harriger, Huiqian Luo +8
Since the discovery of the metallic antiferromagnetic (AF) ground state near superconductivity in iron-pnictide superconductors, a central question has been whether magnetism in th…
Spin Waves and magnetic exchange interactions in insulating RbFeSe
Miaoyin Wang, Chen Fang, Dao-Xin Yao +10
The discovery of alkaline iron selenide FeSe ( K, Rb, Cs) superconductors has generated considerable excitement in the condensed matter physics community becau…
Antiferromagnetic spin excitations in single crystals of nonsuperconducting Li1-xFeAs
Meng Wang, X. C. Wang, D. L. Abernathy +9
We use neutron scattering to determine spin excitations in single crystals of nonsuperconducting Li1-xFeAs throughout the Brillouin zone. Although angle resolved photoemission expe…
Nematic spin fluid in the tetragonal phase of BaFe2As2
Leland W. Harriger, Huiqian Luo, Mengshu Liu +5
Magnetic interactions are generally believed to play a key role in mediating electron pairing for superconductivity in iron arsenides; yet their character is only partially underst…
Anisotropic Neutron Spin Resonance in Superconducting BaFeNiAs
O. J. Lipscombe, Leland W. Harriger, P. G. Freeman +8
We use polarized inelastic neutron scattering to show that the neutron spin resonance below in superconducting BaFeNiAs ( K) is purely magnetic in…
Effect of electron-doping on spin excitations of underdoped BaFeNiAs
Leland W. Harriger, Astrid Schneidewind, Shiliang Li +8
We use neutron scattering to study magnetic order and spin excitations in BaFeNiAs. On cooling, the system first changes the lattice symmetry from tetragona…