Exotic Dielectric Behaviors Induced by Pseudo-Spin Texture in Magnetic Twisted Bilayer

凝聚态物理 电介质 电场 偶极子 扭转 双层石墨烯 材料科学 双层 极化密度 范德瓦尔斯力 电子 物理 磁场 纳米技术 化学 光电子学 石墨烯 磁化 几何学 数学 量子力学 分子 生物化学
作者
Yuhao Shen,Wen‐Yi Tong,Hu He,Jun‐Ding Zheng,Chun‐Gang Duan
出处
期刊:Chinese Physics Letters [Institute of Physics]
卷期号:38 (3): 037501-037501 被引量:13
标识
DOI:10.1088/0256-307x/38/3/037501
摘要

Twisted van der Waals bilayers provide an ideal platform to study the electron correlation in solids. Of particular interest is the 30° twisted bilayer honeycomb lattice system, which possesses an incommensurate moiré pattern, and uncommon electronic behaviors may appear due to the absence of phase coherence. Such a system is extremely sensitive to further twist and many intriguing phenomena will occur. Based on first-principles calculations we show that, for further twist near 30°, there could induce dramatically different dielectric behaviors of electron between left and right-twisted cases. Specifically, it is found that the left and right twists show suppressed and amplified dielectric response under vertical electric field, respectively. Further analysis demonstrate that such an exotic dielectric property can be attributed to the stacking dependent charge redistribution due to twist, which forms twist-dependent pseudospin textures. We will show that such pseudospin textures are robust under small electric field. As a result, for the right-twisted case, there is almost no electric dipole formation exceeding the monolayer thickness when the electric field is applied. Whereas for the left case, the system could even demonstrate negative susceptibility, i.e., the induced polarization is opposite to the applied field, which is very rare in the nature. Such findings not only enrich our understanding on moiré systems but also open an appealing route toward functional 2D materials design for electronic, optical and even energy storage devices.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
含糊的尔槐应助自觉远山采纳,获得200
刚刚
动听的乐安应助闫雪采纳,获得10
刚刚
lm发布了新的文献求助10
刚刚
1秒前
1秒前
斯文的白晴完成签到,获得积分10
2秒前
2秒前
英姑应助why采纳,获得10
2秒前
3秒前
小蘑菇应助郭小宝采纳,获得10
3秒前
wuy发布了新的文献求助10
4秒前
郑仲禹完成签到 ,获得积分10
4秒前
哈哈军哥哥完成签到,获得积分10
4秒前
张六六完成签到,获得积分10
5秒前
烟花应助淡淡夕阳采纳,获得10
5秒前
汉堡包应助收手吧大哥采纳,获得10
7秒前
sylnd126发布了新的文献求助10
7秒前
7秒前
lemon完成签到,获得积分10
7秒前
小烦同学完成签到,获得积分10
8秒前
SYLH应助橙子采纳,获得20
9秒前
我是鸡汤发布了新的文献求助10
9秒前
9秒前
10秒前
10秒前
10秒前
11秒前
11秒前
科研助手6应助能干的吐司采纳,获得10
11秒前
12秒前
CipherSage应助123采纳,获得10
12秒前
12秒前
谦让之云发布了新的文献求助10
13秒前
嗯哼发布了新的文献求助10
13秒前
小蘑菇应助明亮飞双采纳,获得10
14秒前
why发布了新的文献求助10
14秒前
粥粥完成签到 ,获得积分10
14秒前
郭小宝发布了新的文献求助10
14秒前
15秒前
16秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3988786
求助须知:如何正确求助?哪些是违规求助? 3531116
关于积分的说明 11252493
捐赠科研通 3269766
什么是DOI,文献DOI怎么找? 1804771
邀请新用户注册赠送积分活动 881870
科研通“疑难数据库(出版商)”最低求助积分说明 809021