Rashba-Type Spin-Orbit Splitting of Quantum Well States in Ultrathin Pb Films

被引：124

作者：

Dil, J. Hugo ^{[1
,2
]}

Meier, Fabian ^{[1
,2
]}

Lobo-Checa, Jorge ^{[3
]}

Patthey, Luc ^{[2
]}

Bihlmayer, Gustav ^{[4
]}

Osterwalder, Juerg ^{[1
]}

机构：

[1] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

[2] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

[3] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland

[4] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.101.266802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A Rashba-type spin-orbit splitting is found for quantum well states formed in ultrathin Pb films on Si(111). The resulting momentum splitting is comparable to what is found for semiconductor heterostructures. The splitting shows no coverage dependency and the sign of the spin polarization is reversed compared to Rashba splitting in the Au(111) surface state. We explain our results by competing effects at the two boundaries of the Pb layer.

引用

页数：4

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