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Low-energy magnetic excitations from theFe1+y−z(Ni/Cu)zTe1−xSexsystem

Zhijun Xu, Jinsheng Wen, J. Schneeloch, A. D. Christianson, R. J. Birgeneau, Genda Gu, J. M. Tranquada, Guangyong Xu
2014 Physical Review B  

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2014 pre-print
arXiv:1404.1412v1 fatcat:ynwefm2l4vahppviimypjrqedy
We report neutron scattering measurements on low energy (ħω∼ 5 meV) magnetic excitations from a series of Fe_1+y-z(Ni/Cu)_zTe_1-xSe_x samples which belong to the "11" Fe-chalcogenide family. Our results suggest a strong correlation between the magnetic excitations near (0.5,0.5,0) and the superconducting properties of the system. The low energy magnetic excitations are found to gradually move away from (0.5,0.5,0) to incommensurate positions when superconductivity is suppressed, either by
more » ... g or chemical doping, confirming previous observations.
doi:10.1103/physrevb.89.174517 fatcat:ym2omu4ijncfjpo6tuv3fjio2m
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Zhijun Xu, Jinsheng Wen, J. Schneeloch, A. D. Christianson, R. J. Birgeneau, Genda Gu, J. M. Tranquada, Guangyong Xu. "Low-energy magnetic excitations from theFe1+y−z(Ni/Cu)zTe1−xSexsystem." Physical Review B 89.17 (2014)