Ferroelectric Controlled Spin Texture in Two-Dimensional NbOI2 Monolayer

Autor:	Yu-Hao Shen, and Chun-Gang Duan, Qian Ye
Rok vydání:	2021
Předmět:	Materials science Condensed matter physics Monolayer General Physics and Astronomy Texture (crystalline) Ferroelectricity Spin-½
Zdroj:	Chinese Physics Letters. 38:087702
ISSN:	1741-3540 0256-307X
Popis:	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 NbOI2 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 NbOI2 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 NbOI2 provide a platform for the realization of fully electric controlled spintronic devices.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::12c8e4b79a5500c8ff4dcaddb9f147b8 https://doi.org/10.1088/0256-307x/38/8/087702 Zobrazit plný text záznamu