Spontaneous Valley Polarization Caused by Crystalline Symmetry Breaking in Nonmagnetic LaOMX2 Monolayers

Xu Yushuo; Wang Yuanyuan; Wang ShuhuaYu ShiqiangHuang BaibiaoDai YingWei Wei

首页> 外文期刊>Nano letters >Spontaneous Valley Polarization Caused by Crystalline Symmetry Breaking in Nonmagnetic LaOMX2 Monolayers

【24h】

Spontaneous Valley Polarization Caused by Crystalline Symmetry Breaking in Nonmagnetic LaOMX2 Monolayers

机译：Spontaneous Valley Polarization Caused by Crystalline Symmetry Breaking in Nonmagnetic LaOMX2 Monolayers

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

In order to achieve valley polarization, breaking the time-reversal symmetry in two-dimensional hexagonal lattices with inversion asymmetry is the heart of current valleytronic research, which, however, has caused studies to stagnate due to the inevitable drawbacks. In this work, we go beyond the conventional paradigm and demonstrate the novel valley physics caused by lowering the crystalline symmetry instead of breaking the time reversal symmetry. In particular, we translate our concept into concrete nonmagnetic LaOMX2 monolayers with a tetragonal lattice, confirming that a spontaneous structure distortion can cause the long-sought, considerably large valley polarization. In detail, the physics of valley-orbital coupling, valley-orbital-layer coupling, valley-contrasting linear dichroism, and interlayer exciton valleytronics are discussed.

著录项

来源
《Nano letters》 |2022年第22期|9147-9153|共7页
作者
Xu Yushuo; Wang Yuanyuan; Wang ShuhuaYu ShiqiangHuang BaibiaoDai YingWei Wei;
展开▼
作者单位

Shandong Univ;

展开▼
收录信息
原文格式 PDF
正文语种英语
中图分类特种结构材料;物理化学（理论化学）、化学物理学;
关键词
spontaneous valley polarization; crystalline symmetry breaking; LaOMX2 monolayer; valley-orbital-layer coupling; interlayer exciton valleytronics; EXCITONS; BANDGAP; LAYER;

Spontaneous Valley Polarization Caused by Crystalline Symmetry Breaking in Nonmagnetic LaOMX2 Monolayers

摘要

著录项

相关主题

期刊订阅