Atom-specific spin mapping and buried topological states in a homologous series of topological insulators

被引：192

作者：

Eremeev, Sergey V. ^{[1
,2
,3
]}

Landolt, Gabriel ^{[4
,5
]}

Menshchikova, Tatiana V. ^{[2
,3
]}

Slomski, Bartosz ^{[4
,5
]}

Koroteev, Yury M. ^{[1
,2
,3
]}

Aliev, Ziya S.

Babanly, Mahammad B. ^{[6
]}

Henk, Juergen ^{[7
]}

Ernst, Arthur ^{[7
]}

Patthey, Luc ^{[5
]}

Eich, Andreas ^{[8
]}

Khajetoorians, Alexander Ako ^{[8
]}

Hagemeister, Julian ^{[8
]}

Pietzsch, Oswald ^{[8
]}

Wiebe, Jens ^{[8
]}

Wiesendanger, Roland ^{[8
]}

Echenique, Pedro M. ^{[3
,9
,10
]}

Tsirkin, Stepan S. ^{[2
,3
]}

Amiraslanov, Imamaddin R. ^{[11
]}

Dil, J. Hugo ^{[4
,5
]}

Chulkov, Evgueni V. ^{[3
,9
,10
]}

机构：

[1] Inst Strength Phys & Mat Sci, Tomsk 634021, Russia

[2] Tomsk State Univ, Tomsk 634050, Russia

[3] DIPC, San Sebastian 20018, Basque Country, Spain

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

[5] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[6] Baku State Univ, Gen & Inorgan Chem Dept, AZ-1148 Baku, Azerbaijan

[7] Max Planck Inst Mikrostrukturphys, D-06120 Halle, Germany

[8] Univ Hamburg, Inst Appl Phys, D-20355 Hamburg, Germany

[9] Univ Basque Country, Fac Ciencias Quim, Dept Fis Mat, San Sebastian 20080, Basque Country, Spain

[10] Ctr Mixto CSIC UPV EHU, CFM MPC, Ctr Fis Mat, San Sebastian 20080, Basque Country, Spain

[11] Azerbaijan Natl Acad Sci, Inst Phys, AZ-1143 Baku, Azerbaijan

来源：

NATURE COMMUNICATIONS | 2012年 / 3卷

关键词：

SINGLE DIRAC CONE; PLANE-WAVE METHOD; SURFACE; TRANSITION;

D O I：

10.1038/ncomms1638

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A topological insulator is a state of quantum matter that, while being an insulator in the bulk, hosts topologically protected electronic states at the surface. These states open the opportunity to realize a number of new applications in spintronics and quantum computing. To take advantage of their peculiar properties, topological insulators should be tuned in such a way that ideal and isolated Dirac cones are located within the topological transport regime without any scattering channels. Here we report ab-initio calculations, spin-resolved photoemission and scanning tunnelling microscopy experiments that demonstrate that the conducting states can effectively tuned within the concept of a homologous series that is formed by the binary chalcogenides (Bi2Te3, Bi2Se3 and Sb2Te3), with the addition of a third element of the group IV.

引用

页数：7

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