Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 20, 2020
Previous Article Next Article

A 2D Rashba electron gas with large spin splitting in Janus structures of SnPbO2

Author affiliations

Abstract

For realizing two-dimensional (2D) spintronic devices, controllable manipulation of different spin channels is needed. In order to achieve this goal, the materials should have well-separated spin energies induced by spin–orbit coupling (SOC). However, a negligible SOC effect in 2D SnO limits its application in this prospect. Herein, we demonstrate that the stable Janus structure of SnPbO2 can exhibit large spin splitting (67 meV) at the valence band maximum (VBM) due to the breakdown of inverse symmetry. This spin splitting is larger than the thermal fluctuation at room temperature as well as some other 2D systems. In addition, the splitting can be further enhanced by strains (82 meV) or hole doping (147 meV). More importantly, there are no other electronic states except for the Rashba states at the VBM, which make it ideal for practical applications. Our study provides alternative ways to regulate the electronic structure of SnO and the feasibility for spin manipulation in this interesting 2D system.

Graphical abstract: A 2D Rashba electron gas with large spin splitting in Janus structures of SnPbO2

Back to tab navigation

Supplementary files

Article information


Submitted
23 Mar 2020
Accepted
20 Apr 2020
First published
20 Apr 2020

Phys. Chem. Chem. Phys., 2020,22, 11409-11416
Article type
Paper

A 2D Rashba electron gas with large spin splitting in Janus structures of SnPbO2

C. Zhang, Z. Sun, Y. Lin, L. Guan and J. Tao, Phys. Chem. Chem. Phys., 2020, 22, 11409
DOI: 10.1039/D0CP01574A

Social activity

Search articles by author

Spotlight

Advertisements