197 citations · 2k across the 64 of their papers we have counts for
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Uniaxial-Strain Tuning of the Intertwined Orders in BaFe(AsP)
Zinan Zhao, Ding Hu, Xue Fu +5
An experimental determination of electronic phase diagrams of high-transition temperature (high-) superconductors forms the basis for a microscopic understanding of unconventi…
Spin-excitation anisotropy in the nematic state of detwinned FeSe
Xingye Lu, Wenliang Zhang, Yi Tseng +11
The origin of the electronic nematicity in FeSe is one of the most important unresolved puzzles in the study of iron-based superconductors. In both spin- and orbital-nematic models…
In-plane uniaxial pressure-induced out-of-plane antiferromagnetic moment and critical fluctuations in BaFeAs
Panpan Liu, Mason L. Klemm, Long Tian +13
A small in-plane external uniaxial pressure has been widely used as an effective method to acquire single domain iron pnictide BaFeAs, which exhibits twin-domains without u…
Strong local moment antiferromagnetic spin fluctuations in V-doped LiFeAs
Zhuang Xu, Guangyang Dai, Yu Li +15
We use neutron scattering to study vanadium (hole)-doped LiFeVAs. In the undoped state, LiFeAs exhibits superconductivity at K and transverse incommensurate sp…
Reciprocity between local moments and collective magnetic excitations in the phase diagram of BaFe(AsP)
Jonathan Pelliciari, Kenji Ishii, Yaobo Huang +12
Unconventional superconductivity arises at the border between the strong coupling regime with local magnetic moments and the weak coupling regime with itinerant electrons, and stem…
Spin fluctuation anisotropy as a probe of orbital-selective hole-electron quasiparticle excitations in detwinned Ba(Fe1-xCox)2As2
Long Tian, Panpan Liu, Zhuang Xu +7
We use inelastic neutron scattering to study spin excitation anisotropy in mechanically detwinned Ba(Fe1-xCox)2As2 with x = 0.048 and 0.054. Both samples exhibit a tetragonal-to-or…
Anisotropic magnetic excitations of a frustrated bilinear-biquadratic spin model -- Implications for spin waves of detwinned iron pnictides
Changle Liu, Xingye Lu, Pengcheng Dai +2
Elucidating the nature of spin excitations is important to understanding the mechanism of superconductivity in the iron pnictides. Motivated by recent inelastic neutron scattering…
Doping evolution of the charge excitations and electron correlations in electron-doped superconducting LaCeCuO
J. Q. Lin, Jie Yuan, Kui Jin +10
Electron correlations play a dominant role in the charge dynamics of the cuprates. We use resonant inelastic x-ray scattering (RIXS) to track the doping dependence of the collectiv…
Doping Dependence of the Second Magnetization Peak, Critical Current Density and Pinning Mechanism in BaFeNiAs Pnictide Superconductors
Shyam Sundar, Said Salem-Sugui, Edmund Lovell +7
A series of high quality BaFeNiAs pnictide superconductors were studied using magnetic relaxation and isothermal magnetic measurements in order to study the second…
Spin Waves in Detwinned BaFeAs
Xingye Lu, Daniel D. Scherer, David W. Tam +8
Understanding magnetic interactions in the parent compounds of high-temperature superconductors forms the basis for determining their role for the mechanism of superconductivity. F…
Direct observation of spin excitation anisotropy in the paramagnetic orthorhombic state of BaFeNiAs
Haoran Man, Rui Zhang, J. T. Park +4
We use transport and inelastic neutron scattering measurements to investigate single crystals of iron pnictide BaFeNiAs (), which exhibit a tetragonal…
Spin-isotropic continuum of spin excitations in antiferromagnetically ordered FeTe
Yu Song, Xingye Lu, L. -P. Regnault +5
Unconventional superconductivity typically emerges in the presence of quasi-degenerate ground states, and the associated intense fluctuations are likely responsible for generating…
Temperature and polarization dependence of low-energy magnetic fluctuations in nearly-optimal-doped NaFeCoAs
Yu Song, Weiyi Wang, Chenglin Zhang +8
We use unpolarized and polarized neutron scattering to study the temperature and polarization dependence of low-energy magnetic fluctuations in nearly-optimal-doped NaFe…
Spin excitation anisotropy in the paramagnetic tetragonal phase of BaFe2 As2
Yu Li, Weiyi Wang, Yu Song +4
We use neutron polarization analysis to study temperature dependence of the spin excitation anisotropy in BaFeAs, which has a tetragonal-to-orthorhombic structural distorti…
Local and collective magnetism of EuFeAs
Pelliciari Jonathan, Ishii Kenji, Dantz Marcus +9
We present an experimental study of the local and collective magnetism of , that is isostructural with the high temperature superconductor parent compound $\ma…
Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in BaFeAs (Co, Ni)
David W. Tam, Yu Song, Haoran Man +22
We use neutron diffraction and muon spin relaxation to study the effect of in-plane uniaxial pressure on the antiferromagnetic (AF) orthorhombic phase in BaFeAs and its Co-…
Spin anisotropy due to spin-orbit coupling in optimally hole-doped BaKFeAs
Yu Song, Haoran Man, Rui Zhang +9
We use polarized inelastic neutron scattering to study the temperature and energy dependence of spin space anisotropies in the optimally hole-doped iron pnictide BaK$_{0.3…
Effect of nematic order on the low-energy spin fluctuations in detwinned BaFeNiAs
Wenliang Zhang, J. T. Park, Xingye Lu +8
The origin of nematic order remains one of the major debates in iron-based superconductors. In theories based on spin nematicity, one major prediction is that the spin-spin correla…
Electronic specific heat in BaFeNiAs
Dongliang Gong, Tao Xie, Xingye Lu +7
We have systematically studied the low-temperature specific heat of the BaFeNiAs single crystals covering the whole superconducting dome. Using the nonsuperconducti…
Energy dependence of the spin excitation anisotropy in uniaxial-strained BaFe1.9Ni0.1As2
Yu Song, Xingye Lu, D. L. Abernathy +6
We use inelastic neutron scattering to study the temperature and energy dependence of the spin excitation anisotropy in uniaxial-strained electron-doped iron pnictide BaFeN…
Nematic Quantum Critical Fluctuations in BaFeNiAs
Zhaoyu Liu, Yanhong Gu, Wei Zhang +15
We have systematically studied the nematic fluctuations in the electron-doped iron-based superconductor BaFeNiAs by measuring the in-plane resistance change under u…
Electron-doping dependence of the anisotropic superconductivity in BaFeNiAs
Zhaosheng Wang, Tao Xie, E. Kampert +8
The upper critical field () in superconducting BaFeNiAs single crystals has been determined by magnetotransport measurements down to 0.6 K over the whole…
Electronic nematic correlations in the stress free tetragonal state of BaFeNiAs
Haoran Man, Xingye Lu, Justin S. Chen +9
We use transport and neutron scattering to study electronic, structural, and magnetic properties of the electron-doped BaFeNiAs iron pnictides in the external stres…
Impact of Uniaxial Pressure on Structural and Magnetic Phase Transitions in Electron-Doped Iron Pnictides
Xingye Lu, Kuo-Feng Tseng, T. Keller +9
We use neutron resonance spin echo and Larmor diffraction to study the effect of uniaxial pressure on the tetragonal-to-orthorhombic structural () and antiferromagnetic (AF) p…