自旋电子学
铁电性
凝聚态物理
单层
材料科学
极化(电化学)
自旋极化
实现(概率)
联轴节(管道)
纹理(宇宙学)
自旋(空气动力学)
物理
光电子学
电介质
铁磁性
纳米技术
量子力学
化学
计算机科学
人工智能
数学
冶金
热力学
物理化学
电子
图像(数学)
统计
作者
Qian Ye,Yu-Hao Shen,and Chun-Gang Duan
标识
DOI:10.1088/0256-307x/38/8/087702
摘要
The persistent spin helix (PSH) system is considered to have promising applications in energy-conservation spintronics because it supports an extraordinarily long spin lifetime of carriers. Here, we predict that the existence of PSH state in two-dimensional (2D) ferroelectric NbOI 2 monolayers. Our first-principles calculation results show that there exists Dresselhaus-type spin-orbit coupling (SOC) band splitting near the conduction-band minimum (CBM) of the NbOI 2 monolayer. It is revealed that the spin splitting near CBM merely refers to out-of-plane spin configuration in the wave vector space, which gives rise to a long-lived PSH state that can be controlled by reversible ferroelectric polarization. We believe that the coupling characteristics of ferroelectric polarization and spin texture in NbOI 2 provide a platform for the realization of fully electric controlled spintronic devices.
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