Q. Huang

Xiamen University of Technology

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J. W. Lynn

NIST Center for Neutron Research

R. J. Cava

Princeton University

Hui Wu

Affiliated Hospital of Youjiang Medical University for Nationalities

Xianran Xing

University of Science and Technology Beijing

Jun Chen

University of Science and Technology Beijing

A. Santoro

University of Messina

Yang Ren

City University of Hong Kong

Terrence J. Udovic

NIST Center for Neutron Research

Pengcheng Dai

Rice University

Tyrel M. McQueen

Johns Hopkins University

Cooperative Institutions

Chinese Academy of Sciences

411

University of Chinese Academy of Sciences

210

Institute of Physics

206

National Institute of Standards and Technology

173

NIST Center for Neutron Research

126

Peking University

106

Czech Academy of Sciences, Institute of Physics

University of Science and Technology of China

University of Maryland, College Park

National Laboratory for Superconductivity

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Near zero temperature coefficient of resistivity in antiperovskite Mn3Ni1−xCuxN

Applied Physics Letters (2011)

Lei Ding Cong Wang Lihua Chu Jun Yan Yuanyuan Na

The near zero temperature coefficient of resistivity (NZ-TCR) in Mn-based antiperovskite Mn3Ni1−xCuxN is reported. The temperature range of NZ-TCR is controllable by changing Cu content. Further, the TCR value of 0.09 ppm K−1 was obtained in Mn3Ni0.5Cu0.5N over a broad temperature range around room temperature. The anomalous resistivity change of Mn3Ni1−xCuxN from metal-like to NZ-TCR behavioris apparently due to a magnetic transition. The possible reason for the formation of NZ-TCR is interpreted on the basis of spin-disorder scattering.

Antiperovskite

Temperature coefficient

Atmospheric temperature range

Zero temperature

10.1063/1.3671183

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Citations (92)

Extreme sensitivity of superconductivity to stoichiometry inFe1+δSe

Physical Review B (2009)

Tyrel M. McQueen Q. Huang Vadim Ksenofontov Claudia Felser Qiang Xu

The recently discovered iron arsenide superconductors appear to display a universal set of characteristic features, including proximity to a magnetically ordered state and robustness of the superconductivity in the presence of disorder. Here we show that superconductivity in ${\text{Fe}}_{1+\ensuremath{\delta}}\text{Se}$, which can be considered the parent compound of the superconducting arsenide family, is destroyed by very small changes in stoichiometry. Further, we show that nonsuperconducting ${\text{Fe}}_{1+\ensuremath{\delta}}\text{Se}$ is not magnetically ordered down to 5 K. These results suggest that robust superconductivity and immediate instability against an ordered magnetic state should not be considered as intrinsic characteristics of iron-based superconducting systems.

Stoichiometry

Arsenide

Robustness

10.1103/physrevb.79.014522

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Citations (621)

Re-emerging superconductivity at 48 kelvin in iron chalcogenides

Nature (2012)

Liling Sun Xiao‐Jia Chen Jing Guo Peiwen Gao Q. Huang

10.1038/nature10813

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Citations (323)

DNALI1 interacts with the MEIG1/PACRG complex within the manchette and is required for proper sperm flagellum assembly in mice

Carolina Digital Repository (University of North Carolina at Chapel Hill) (2023)

Yi Tian W. Li Q. Huang Qun Zhou D. Zhang

10.17615/kptb-zg03

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A complex magnetic structure in the magnetoresistive La_0.82Ba_0.18CoO₃

Journal of Physics Conference Series (2010)

Peng Tong Q. Huang Maiko Kofu Martin Lehman Jaejun Yu

The magnetic structure of the perovskite cobaltite La0.82Ba0.18CoO3 was investigated using powder neutron diffraction. Although macroscopically this composition is thought to be in the spin-glass phase from bulk magnetic measurements, the presence of Bragg-like magnetic features in the neutron diffractograms suggests otherwise. At 4 K, two long-range magnetic orders are observed with two propagation wave vectors, k1 = (0,0,0) and k2 = (0,-0.5,0.5), corresponding to ferromagnetic and antiferromagnetic orders, respectively. However, above 100 K, the k2 component almost disappears, while k1 persists.

Cobaltite

Magnetic structure

10.1088/1742-6596/251/1/012015

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Citations (2)

Coexistence of the spin-density-wave and superconductivity in the Ba 1-x K x Fe 2 As 2

APS March Meeting Abstracts (2009)

Yang Ren H. Chen Yunfeng Qiu Wei Bao R. H. Liu

Spin density wave

Source

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Citations (16)

Magnetic structure and site occupancies in YFe11−xCoxTi (x=1,3,7,9)

Journal of Applied Physics (1999)

J. K. Liang Q. Huang A. Santoro Jianlong Wang Fang Yang

The crystal and magnetic structures of the system YFe11−xCoxTi have been investigated by high-resolution neutron powder diffraction for the compositions x=1, 3, 7, and 9. All compounds have the ThMn12 type structure, with space group symmetry I4/mmm. The distribution of the atoms over the independent crystallographic sites was found to be significantly different from random, with a strong preference for Ti to be in the 8i site and Co in the 8j and 8f sites. This behavior can be explained in terms of the enthalpy of formation of binary alloys. The magnetic moments are parallel to the c axis for the compositions x=1, 3, 9, and lie in the a-b plane for x=7. No evidence of additional nuclear or magnetic phase transitions was observed for sample YFe4Co7Ti down to 20 K.

Magnetic structure

Space group

10.1063/1.371023

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Citations (15)

Structural transition inNaxCoO2withxnear 0.75 due to Na rearrangement

Physical Review B (2004)

Q. Huang Boris Khaykovich F. C. Chou J. H. Cho J. W. Lynn

We report neutron powder diffraction measurements on a series of ${\mathrm{Na}}_{x}\mathrm{Co}{\mathrm{O}}_{2}$ samples with $x$ near 0.75 which were prepared under different synthesis conditions. Two different crystal structures for the samples are observed at room temperature. The two structures belong to the space group $P{6}_{3}∕mmc$ and differ primarily by a shift of a large fraction of the Na ions from a high-symmetry position to a lower-symmetry position. Close inspection of the refinement parameters indicates that the presence of either structure depends sensitively on the Na content $x$, with $x\ensuremath{\simeq}0.75$ as the critical concentration separating the two phases. By raising the temperature to around $T\ensuremath{\simeq}323\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, the high-symmetry structure can be converted to the lower-symmetry structure. The transition is reversible, but there is significant hysteresis. We discuss the effects of this structural transition on the bulk magnetic and transport properties.

Position (finance)

10.1103/physrevb.70.134115

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Citations (55)

Phase precipitation in the Bi _1−x Ca _x MnO ₃ compounds (x = 0.4–0.6)

EPL (Europhysics Letters) (2013)

Guannan Li Guanghui Rao Q. Huang Qingqing Gao Jun Luo

Charge ordering (CO) in Bi1−xCaxMnO3 (x = 0.4–0.6) has been investigated by temperature-dependent high-resolution neutron powder diffraction (NPD), X-ray powder diffraction (XRD) and physical property measurements. Anomalies in magnetization, resistivity and lattice parameters have been observed around the CO transition temperature (TCO) reported in the literature. However, a scrutiny of the NPD and XRD data at different temperatures and the electron diffraction experiments at 300 K give no evidence of a long-range CO below the reported TCO. Instead, NPD and XRD reveal a coexistence of two orthorhombic phases in the samples below the reported TCO. All the experiments suggest that one of the coexisting phases is originated from a precipitation or an incomplete structural transition of the other phase and the reported TCO corresponds to the precipitation reaction or structural transition temperature, rather than a CO transition temperature.

10.1209/0295-5075/101/67004

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Citations (0)

PbMn(SO4)2: A new chiral antiferromagnet

Journal of Solid State Chemistry (2009)

D. V. West I. Daniel Posen Q. Huang H.W. Zandbergen Tyrel M. McQueen

Space group

10.1016/j.jssc.2009.06.021

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Citations (8)