期刊
PHYSICAL REVIEW B
卷 99, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.99.125130
关键词
-
资金
- U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-AC0276SF00515]
- National Energy Research Scientific Computing Center [DE-AC02-05CH11231]
- German Research Foundation (DFG) via the Transregional Collaborative Research Center TRR80
- Bavaria California Technology Center BaCaTeC [21 [2016-2]]
- German Research Foundation (DFG) [HA2071/12-1]
We investigate properties of a spin-1 Heisenberg model with extended and biquadratic interactions, which captures crucial aspects of the low energy physics in FeSe. While we show that the model exhibits a rich phase diagram with four different magnetic ordering tendencies, we identify a parameter regime with strong competition between Ned, staggered dimer, and stripelike magnetic fluctuations, accounting for the physical properties of FeSe. We evaluate the spin and Raman responses using exact diagonalization. Through comparison with experiments we find enhanced magnetic frustration between Ned and collinear stripe ordering tendencies, which increases with increasing temperature. The explanation of these spectral behaviors with this frustrated spin model supports the idea of local spin interactions in FeSe.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据