首页|Coexistence of giant Rashba spin splitting and quantum spin Hall effect in H-Pb-F

Coexistence of giant Rashba spin splitting and quantum spin Hall effect in H-Pb-F

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Rashba spin splitting(RSS)and quantum spin Hall effect(QSHE)have attracted enormous interest due to their great significance in the application of spintronics.In this work,we theoretically proposed a new two-dimensional(2D)material H-Pb-F with coexistence of giant RSS and quantum spin Hall effec by using the ab initio calculations.Our results show that H-Pb-F possesses giant RSS(1.21 eV·Å)and the RSS can be tuned up to 4.16 eV·Å by in-plane biaxial strain,which is a huge value among 2D materials.Furthermore,we also noticed that H-Pb-F is a 2D topological insulator(TI)duo to the strong spin-orbit coupling(SOC)interaction,and the large topological gap is up to 1.35 eV,which is large enough for for the observation of topological edge states at room temperature.The coexistence of giant RSS and quantum spin Hall effect greatly broadens the potential application of H-Pb-F in the field of spintronic devices.

coexistenceRashba spin splittingquantum spin Hall effectspin-orbit coupling

Wenming Xue、Jin Li、Chaoyu He、Tao Ouyang、Xiongying Dai、Jianxin Zhong

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School of Computational Science and Electronics,Hunan Institute of Engineering,Xiangtan 411104,China

School of Physics and Optoelectronics Engineering,Xiangtan University,Xiangtan 411105,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Basic Research Program of ChinaNatural Science Foundation of Hunan Province,ChinaNatural Science Foundation of Hunan Province,ChinaScientific Research Foundation of the Education Bureau of Hunan Province,ChinaScientific Research Foundation of the Education Bureau of Hunan Province,ChinaScientific Research Foundation of the Education Bureau of Hunan Province,ChinaFund for the Innovative Research Team in University

1187431611404275114742442015CB9211032016JJ31182020JJ424416K08417K08621A049IRT13093

2023

10.1088/1674-1056/aca7eb

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDCSCD北大核心EI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2023.32(3)
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