Bulk and surface Rashba splitting in single termination BiTeCl

被引：64

作者：

Landolt, Gabriel ^{[1
,2
]}

Eremeev, Sergey V. ^{[3
,4
]}

Tereshchenko, Oleg E. ^{[5
,6
]}

Muff, Stefan ^{[1
,2
]}

Slomski, Bartosz ^{[1
,2
]}

Kokh, Konstantin A. ^{[7
]}

Kobayashi, Masaki ^{[2
]}

Schmitt, Thorsten ^{[2
]}

Strocov, Vladimir N. ^{[2
]}

Osterwalder, Juerg ^{[1
]}

Chulkov, Evgueni V. ^{[4
,8
,9
]}

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

机构：

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

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

[3] Russian Acad Sci, Siberian Branch, Inst Strength Phys & Mat Sci, Tomsk 634021, Russia

[4] Tomsk State Univ, Tomsk 634050, Russia

[5] Russian Acad Sci, Rzhanov Inst Semicond Phys, Siberian Branch, Novosibirsk 630090, Russia

[6] Novosibirsk State Univ, Novosibirsk 636090, Russia

[7] Russian Acad Sci, Sobolev Inst Geol & Mineral, Siberian Branch, Novosibirsk 630090, Russia

[8] Univ Basque Country, Dept Fis Mat, Donostia Int Phys Ctr, E-20080 San Sebastian, Spain

[9] Univ Basque Country, Dept Fis Mat, Ctr Mixto CSIC UPV EHU, CFM, E-20080 San Sebastian, Spain

来源：

NEW JOURNAL OF PHYSICS | 2013年 / 15卷

基金：

瑞士国家科学基金会;

关键词：

Bismuth compounds;

D O I：

10.1088/1367-2630/15/8/085022

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By angle-resolved photoemission spectroscopy (ARPES) we observe a giant Rashba-type spin splitting in the electronic bulk conduction and valence bands of the semiconductor BiTeCl. This material belongs to the group of bismuth tellurohalides BiTeX (X=Cl,Br,I) which are layered non-centrosymmetric materials with strong spin-orbit interaction. By photon energy-dependent ARPES, we separate the bulk and surface contribution of the electronic structure and show that the tellurium-terminated (0001) crystal surface hosts spin-split two-dimensional surface states. On the chlorine-terminated surface at the opposite side of the crystal no surface states are observed due to photon-induced surface chemistry.

引用

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