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

页数：6

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