Large spin splitting of metallic surface-state bands at adsorbate-modified gold/silicon surfaces

被引：50

作者：

Bondarenko, L. V. ^{[1
,2
]}

Gruznev, D. V. ^{[1
,2
]}

Yakovlev, A. A. ^{[1
]}

Tupchaya, A. Y. ^{[1
]}

Usachov, D. ^{[3
]}

Vilkov, O. ^{[3
]}

Fedorov, A. ^{[3
]}

Vyalikh, D. V. ^{[3
,4
]}

Eremeev, S. V. ^{[5
,6
]}

Chulkov, E. V. ^{[7
,8
,9
]}

Zotov, A. V. ^{[1
,2
,10
]}

Saranin, A. A. ^{[1
,2
]}

机构：

[1] Inst Automat & Control Proc, Vladivostok 690041, Russia

[2] Far Eastern Fed Univ, Sch Nat Sci, Vladivostok 690950, Russia

[3] St Petersburg State Univ, St Petersburg 198504, Russia

[4] Tech Univ Dresden, Inst Solid State Phys, D-01062 Dresden, Germany

[5] Russian Acad Sci, Inst Strength Phys & Mat Sci, Tomsk 634021, Russia

[6] Tomsk State Univ, Tomsk 634050, Russia

[7] Donostia Int Phys Ctr, San Sebastian 20018, Basque Country, Spain

[8] Univ Basque Country, Fac Ciencias Quim, Ctr Fis Mat CFM,Mat Phys Ctr MPC, Dept Fis Mat, San Sebastian 20080, Basque Country, Spain

[9] Univ Basque Country, Fac Ciencias Quim, Ctr Fis Mat CFM,Mat Phys Ctr MPC, Ctr Mixto CSIC UPV EHU, San Sebastian 20080, Spain

[10] Vladivostok State Univ Econ & Serv, Dept Elect, Vladivostok 690600, Russia

来源：

SCIENTIFIC REPORTS | 2013年 / 3卷

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1038/srep01826

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：

Finding appropriate systems with a large spin splitting of metallic surface-state band which can be fabricated on silicon using routine technique is an essential step in combining Rashba-effect based spintronics with silicon technology. We have found that originally poor structural and electronic properties of the Au/Si(111)root 3 x root 3 surface can be substantially improved by adsorbing small amounts of suitable species (e. g., Tl, In, Na, Cs). The resultant surfaces exhibit a highly-ordered atomic structure and spin-split metallic surface-state band with a momentum splitting of up to 0.052 angstrom(-1) and an energy splitting of up to 190 meV at the Fermi level. The family of adsorbate-modified Au/Si(111)root 3 x root 3 surfaces, on the one hand, is thought to be a fascinating playground for exploring spin-splitting effects in the metal monolayers on a semiconductor and, on the other hand, expands greatly the list of material systems prospective for spintronics applications.

引用

页数：6

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