α-Sn phase on Si(111): Spin texture of a two-dimensional Mott state

被引：10
|
作者：
Jaeger, M. [1 ]
Brand, C. [1 ,5 ,6 ]
Weber, A. P. [2 ,3 ]
Fanciulli, M. [2 ,3 ]
Dil, J. H. [2 ,3 ]
Pfnuer, H. [1 ]
Tegenkamp, C. [1 ,4 ]
机构：
[1] Leibniz Univ Hannover, Inst Festkorperphys, Appelstr 2, D-30167 Hannover, Germany
[2] Ecole Polytech Fed Lausanne, Inst Phys, CH-1015 Lausanne, Switzerland
[3] Paul Scherrer Inst, Photon Sci Div, CH-5232 Villigen, Switzerland
[4] Tech Univ Chemnitz, Inst Phys, Reichenhainer Str 70, D-09126 Chemnitz, Germany
[5] Univ Duisburg Essen, Fak Phys, Lotharstr 1, D-47057 Duisburg, Germany
[6] Univ Duisburg Essen, CENIDE, Lotharstr 1, D-47057 Duisburg, Germany
来源：
PHYSICAL REVIEW B | 2018年 / 98卷 / 16期
基金：
瑞士国家科学基金会;
关键词：
SURFACE; SUPERCONDUCTIVITY;
D O I：
10.1103/PhysRevB.98.165422
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The alpha-Sn reconstruction on Si(111) is a prototype system for a two-dimensional Mott phase. In this study we performed spin-resolved photoemission experiments and analyzed in detail the spin structure of this electronically correlated surface state. The analysis of the spin-integrated bands as well as the spin texture of the surface states along different crystallographic directions provide clear evidence for the formation of collinear antiferromagnetic (2 root 3 x root 3) domains, while the Sn reconstruction reveals a (root 3 x root 3) symmetry. The Rashba splitting of the highest occupied Mott state was found to be Delta k = 0.05 angstrom(-1), i.e., the alpha-Sn phase should be termed a weakly spin-orbit coupled Mott system.
引用
收藏
页数：6
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