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Search Publications by: Guangyong Xu (Fed)

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Displaying 76 - 81 of 81

Phase Competition in the Palmer-Chalker XY Pyrochlore Er 2 Pt 2 O 7

October 30, 2017
Author(s)
A. M. Hallas, J. Gaudet, Nicholas Butch, Guangyong Xu, M. Tachibana, C. R. Wiebe, Graeme M. Luke, Bruce D. Gaulin
We report neutron scattering measurements on Er 2Pt 2O 7, a new addition to the XY family of frustrated pyrochlore magnets. Symmetry analysis of our elastic scattering data shows that Er 2Pt 2Od7^ is the first XY pyrochlore to order into the κ = 0,Γ 7

Surprising Loss of Three-Dimensionality in Low-Energy Spin Correlations on Approaching Superconductivity in Fe 1+y Te 1-x Se x

October 6, 2017
Author(s)
Zhijun Xu, J. A. Schneeloch, Jinsheng Wen, B. L. Winn, G. E. Granroth, Yang Zhao, Genda Gu, I. Zaliznyak, J. M. Tranquada, R. J. Birgeneau, Guangyong Xu
We report inelastic neutron scattering measurements of low energy (hwapproximately less than} 10 meV) magnetic excitations in the "11" system Fe 1+yTe 1-xSe x. The spin correlations are two-dimensional (2D) in the superconducting samples at low temperature

Direct Observation of Magnon-Phonon Coupling in Yttrium Iron Garnet

September 27, 2017
Author(s)
Haoran Man, Zhong Shi, Guangyong Xu, Yadong Xe, Xi Chen, Sean Sullivan, Jianshi Zhou, Ke Xia, Jing Shi, Pengcheng Dai
The magnetic insulator Yttrium Iron Garnet (YIG) with a ferrimagnetic transition temperature of 560 K has been widely used in microwave and spintronic devices. Anomalous features in the spin Seeback effect (SSE) voltages have been observed in Pt/YIG and