Computational Study of Metal-Free Magnetism and Spin-Dependent Seebeck Effect in Silicene Nanoribbons with Zigzag and Klein Edges

被引：0

作者：

Tan, Xingyi ^{[1
,2
]}

Xu, Gang ^{[1
]}

Jiang, Youchang ^{[1
]}

Ren, Dahua ^{[2
]}

机构：

[1] Chongqing Three Gorges Univ, Dept Phys, Wanzhou 404100, Peoples R China

[2] Hubei Minzu Univ, Sch Informat Engn, Enshi 445000, Peoples R China

来源：

ADVANCES IN CONDENSED MATTER PHYSICS | 2022年 / 2022卷

基金：

湖北省教育厅重点项目; 中国国家自然科学基金;

关键词：

GRAPHENE; SEMICONDUCTORS; FERROMAGNET; ATOM;

D O I：

10.1155/2022/9969776

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Nanoribbons based on low-dimensional materials are potential candidates for nanoscale spintronics devices. Here, some ferromagnetic silicene nanoribbons with zigzag and Klein edges (N-ZKSiNRs) are constructed. It is demonstrated that the N-ZKSiNRs with various widths (N) are placed in various spin-resolved electronic situations. With the increase of the width parameter N from 4 to 19, the N-ZKSiNRs pass from the indirect-gap bipolar magnetic semiconducting state (BMS) to the bipolar spin-gapless semiconductor (BSGS) and eventually to half-metallicity (HM). Moreover, applying a temperature gradient through the nanoribbons leads to spin-dependent current with the opposite flowing and spin orientations, demonstrating the spin-dependent Seebeck effect (SDSE). Besides, it was found that the BSGS phase is superior to the BMS and HM for generating SDSE. These findings confirm that the ZKSiNRs are promising choices for spin caloritronics devices.

引用

页数：7