期刊
PHYSICAL REVIEW B
卷 87, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.87.035403
关键词
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资金
- 973 Program [2013CB922300]
- National Natural Science Foundation (NSF) of China [11004211, 50832003, 61125403, 60990312, 61076060, 61006089]
- Program for Changjiang Scholars and Innovative Research Team (PCSIRT)
- New Century Excellent Talents (NCET)
- Fundamental Research Funds for the central universities (ECNU)
Combining density-functional theory (DFT) calculations and theoretical analyses, we demonstrate the high-order Rashba spin-orbit coupling in the Au(111) surface and the electric field manipulation of the Rashba splitting energy. A good linear relationship between the Rashba splitting energy and applied electric field is revealed by DFT calculations. The effect is attributed to the linear response of the first-order Rashba parameter to the applied electric field. The nonlinear relationship between Rashba splitting energy and the wave vectors identifies the higher-order Rashba components, which, however, are found to be less influenced by the external electric field. Our investigation provides an in-depth understanding of the tunability of Rashba splitting in a metal surface, which is of great interest in the area of electrical control of spin states. DOI: 10.1103/PhysRevB.87.035403
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