铁电性
自旋晶体管
材料科学
异质结
凝聚态物理
场效应晶体管
晶体管
多铁性
单层
自旋(空气动力学)
光电子学
自旋极化
电场
自旋电子学
半导体
电子
电压
自旋霍尔效应
纳米技术
物理
铁磁性
热力学
量子力学
电介质
作者
Xian Zhang,Bang Liu,Huang Jun-sheng,Xinwei Cao,Yunzhe Zhang,Zhi-Xin Guo
出处
期刊:Cornell University - arXiv
日期:2023-01-01
标识
DOI:10.48550/arxiv.2311.03690
摘要
We report first-principles calculations that propose a nonvolatile spin field effect transistor (spin- FET) based on a van der Waals multiferroic heterostructure, i.e., VSi2N4/Sc2CO2. We find that the inversion of ferroelectric polarization of monolayer Sc2CO2 can efficiently modulate the electronic states of monolayer VSi2N4. A half-metal to half-semiconductor phase translation of VSi2N4 can be efficiently realized, which leads to distinct electronic transport properties. We additionally construct a spin-FET device based on the multiferroic heterostructure. We find that the VSi2 N4 /Sc2 CO2 based Spin-FET has remarkable all-electric-controlled performance. A large on-off current ratio of about 650% induced by the inversion of Sc2CO2 ferroelectric polarization can be obtained under a small bias voltage (0.02 V). We also find an interesting spatially-separated spin-polarized transport phenomenon, with the pure spin-up (spin-down) electrons transporting merely in VSi2N4 (Sc2CO2). Our study provides a promising approach for constructing low-energy-dissipation and nonvolatile FET devices.
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