Comprehensive inelastic neutron scattering study of the multiferroic Mn1-x Cox WO4

Jinchen Wang, R. S. Fishman, Yiming Qiu, J. A. Fernandez-Baca, Georg Ehlers, K. C. Liang, Yaqi Wang, Bernd Lorenz, C. W. Chu, Feng Ye

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3 引文 斯高帕斯(Scopus)

摘要

Using high-resolution inelastic neutron scattering, we examine the spin dynamics of Mn1-xCoxWO4 in the collinear AF1, the ac-b spiral AF2, and the ac cycloidal AF5 phases. The spin wave excitations are well described by a Heisenberg model with competing long-range exchange interactions (Ji up to 12th nearest neighbors) and the single-ion anisotropy K induced by the spin-orbit interaction. While the exchange constants are relatively unchanged, the dominant effect of doping is to change the single-ion anisotropy from easy axis (K>0) in the collinear AF1 phase to easy plane (K<0) in the two multiferroic phases.

原文English
文章編號214425
期刊Physical Review B
98
發行號21
DOIs
出版狀態Published - 2018 12月 14

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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