93 citations · 662 across the 24 of their papers we have counts for
25 papers
Insights into the structural symmetry of single-crystal YCrO from synchrotron X-ray diffraction
Qian Zhao, Si Wu, Yinghao Zhu +2
We report on the crystallographic information such as lattice parameters, atomic positions, bond lengths and angles, and local crystalline distortion size and mode of single-crysta…
Ground and Applied-Field-Driven Magnetic States of Antiferromagnets
Hai-Feng Li, Zikang Tang
As discussed in this chapter, we develop a mean-field mathematical method to calculate the ground states of antiferromagnets and better understand the applied magnetic-field induce…
Possible Dirac quantum spin liquid in a kagome quantum antiferromagnet YCu(OH)Br[Br(OH)]
Zhenyuan Zeng, Xiaoyan Ma, Si Wu +13
We studied the magnetic properties of YCu(OH)Br[Br(OH)] ( = 0.33), where Cu ions form two-dimensional kagome layers. There is no magnetic order…
Crystal field effects in the zig-zag chain compound SrTmO
A. Bhat Kademane, D. L. Quintero-Castro, K. Siemensmeyer +6
The single ion properties of the zig-zag chain compound SrTmO have been investigated using heat capacity, magnetic susceptibility, magnetization, inelastic neutron scatteri…
Disorder-induced spin-liquid-like behavior in kagome-lattice compounds
Zhen Ma, Zhao-Yang Dong, Si Wu +14
Quantum spin liquids (QSLs) are an exotic state of matter that is subject to extensive research. However, the relationship between the ubiquitous disorder and the QSL behaviors is…
Enhanced magnetocaloric effect and magnetic phase diagrams of single-crystal GdCrO
Yinghao Zhu, Pengfei Zhou, Tao Li +10
The crystalline structure, magnetism, and magnetocaloric effect of a GdCrO single crystal grown with the laser-diode-heated floating-zone technique have been studied. The GdCrO…
Colossal Negative Magnetoresistance Effect in A LaSrMnO Single Crystal Grown by Laser-Diode-Heated Floating-Zone Technique
Si Wu, Yinghao Zhu, Junchao Xia +3
We have grown LaSrMnO single crystals with a laser-diode-heated floating-zone furnace and studied the crystallinity, structure, and magnetoresistance (MR)…
Super-Necking Crystal Growth and Structural and Magnetic Properties of SrTbO Single Crystals
Si Wu, Yinghao Zhu, Haoshi Gao +8
We report on single-crystal growths of the SrTbO compound by a super-necking technique with a laser-floating-zone furnace and study the stoichiometry, growth mode, and stru…
Crystalline and magnetic structures, magnetization, heat capacity and anisotropic magnetostriction effect in a yttrium-chromium oxide
Yinghao Zhu, Ying Fu, Bao Tu +11
We have studied a nearly stoichiometric insulating YCrO single crystal by performing measurements of magnetization, heat capacity, and neutron d…
High-temperature magnetism and crystallography of a YCrO single crystal
Yinghao Zhu, Si Wu, Bao Tu +9
Magnetization measurements and time-of-flight neutron powder-diffraction studies on the high-temperature (300--980 K) magnetism and crystal structure (321--1200 K) of a pulverized…
Possible magnetic-polaron-switched positive and negative magnetoresistance in the GdSi single crystal
Hai-Feng Li, Yinguo Xiao, Berthold Schmitz +5
Magnetoresistance (MR) has attracted tremendous attention for possible technological applications. Understanding the role of magnetism in manipulating MR may in turn steer the sear…
Distinct itinerant spin-density waves and local-moment antiferromagnetism in an intermetallic ErPdSi single crystal
Hai-Feng Li, Chongde Cao, Andrew Wildes +8
Identifying the nature of magnetism, itinerant or localized, remains a major challenge in condensed-matter science. Purely localized moments appear only in magnetic insulators, whe…
Magnetization, crystal structure and anisotropic thermal expansion of single-crystal SrEr2O4
Hai-Feng Li, Andrew Wildes, Binyang Hou +5
The magnetization, crystal structure, and thermal expansion of a nearly stoichiometric SrErO single crystal have been studied by PPMS measuremen…
Anisotropic magnetoelastic coupling in single-crystalline CeFeAsO as seen via high-resolution x-ray diffraction
H. -F. Li, J. -Q. Yan, J. W. Kim +3
Single-crystal synchrotron x-ray diffraction studies of CeFeAsO reveal strong anisotropy in the charge correlation lengths along or perpendicular to the in-plane antiferromagnetic…
Disorder from order among anisotropic next-nearest-neighbor Ising spin chains in SrHoO
J. -J. Wen, W. Tian, V. O. Garlea +7
We describe why Ising spin chains with competing interactions in segregate into ordered and disordered ensembles at low temperatures (). Using elastic neutron sc…
Incommensurate antiferromagnetic order in the manifoldly-frustrated SrTbO with transition temperature up to 4.28 K
Hai-Feng Li, Cong Zhang, Anatoliy Senyshyn +9
The Nel temperature of the new frustrated family of Sr\emph{RE}O (\emph{RE} = rare earth) compounds is yet limited to 0.9 K, which more or less hamper…
A second-order spin-flop transition in collinear two-sublattice antiferromagnets
Haifeng Li
Identifying the nature of a spin-flop (SFO) transition, first- or second-order (FO or SO), remains a major challenge in condensed-matter physics due to the technically undistinguis…
Nonmagnetic ordering state of single-crystal SrTmO: A polarized and unpolarized neutron-scattering study
Haifeng Li, Binyang Hou, Andrew Wildes +6
Our single-crystal polarized neutron scattering at 65 mK and powder unpolarized neutron diffraction at 0.5 K show no evidence for a long-range magnetic order and even detect no sig…
Magnetic structures and the Ce-Fe coupling induced Fe spin reorientation in CeFeAsO single crystal
Qiang Zhang, Wei Tian, Haifeng Li +8
Neutron and synchrotron resonant X-ray magnetic scattering (RXMS) complemented by heat capacity and resistivity measurements reveal the evolution of the magnetic structures of Fe a…
Magnetic structure and orbital ordering in KCrF3 perovskite
Y. Xiao, Y. Su, H. -F. Li +6
KCrF3 represents another prototypical orbital-ordered perovskite, where Cr2+ possesses the same electronic configuration of 3d4 as that of strongly Jahn-Teller distorted Mn3+ in ma…
Magnetic and lattice coupling in single-crystal SrFeAs: A neutron scattering study
Haifeng Li, Wei Tian, Jerel L. Zarestky +7
A detailed elastic neutron scattering study of the structural and magnetic phase transitions in single-crystal SrFeAs reveals that the orthorhombic (O)-tetragonal (T) and t…
Anisotropic and quasipropagating spin excitations in superconducting Ba(Fe0.926Co0.074)2As2
H. -F. Li, C. Broholm, D. Vaknin +12
Inelastic neutron scattering from superconducting (SC) Ba(FeCo)As reveals anisotropic and quasi-two-dimensional (2D) magnetic excitations close to \text…
The magnetic form factor of iron in SrFe2As2
Y. Lee, David Vaknin, Haifeng Li +7
The iron magnetic form factor in SrFe2As2 has been determined by neutron diffraction and by density functional theory (DFT). As noted previously, the magnitude of the calculated mo…
Paramagnetic Spin Correlations in CaFe2As2 Single Crystals
S. O. Diallo, D. K. Pratt, R. M. Fernandes +13
Magnetic correlations in the paramagnetic phase of CaFe2As2 (T_N=172 K) have been examined by means of inelastic neutron scattering from 180 K (~ 1.05 T_N) up to 300 K (~1.8 T_N).…