声子
凝聚态物理
物理
角动量
温度梯度
对角线的
动量(技术分析)
密度矩阵
基质(化学分析)
旋转(数学)
量子
量子力学
材料科学
几何学
数学
财务
复合材料
经济
作者
Jinxin Zhong,Hong Sun,Yang Pan,Zhiguo Wang,X. G. Xu,Lifa Zhang,Jun Zhou
出处
期刊:Physical review
日期:2023-03-24
卷期号:107 (12)
被引量:1
标识
DOI:10.1103/physrevb.107.125147
摘要
A temperature gradient in chiral materials can generate a nonzero mean value of phonon angular momentum (PAM). We used the Kubo formula to investigate the contribution of both intraband and interband terms of PAM to the mean PAM. Interestingly, the interband term was found to be as important as the intraband term, indicating that the quantum transition between different phonon branches induced by a temperature gradient strongly affects locally atomic rotation. This discovery opens up an alternative mechanism for generating PAM and phonon magnetic moments.
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