کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5395764 | 1505729 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tailoring of spin-split metallic surface-state bands on silicon
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
68.43.Bc68.37.Ef68.43.HnRashba effect - اثر راشاAtom–solid interactions - تعامل اتمی جامدSelf-assembly - خودآموزیsilicon - سیلیسیم Angle-resolved photoelectron spectroscopy - طیف سنجی فوتوالکترون حلقوی زاویهScanning tunneling microscopy - میکروسکوپ تونلی روبشی Two-dimensional electron gas - گاز الکترون دو بعدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
To exploit Rashba effect in a two-dimensional electron gas on silicon surface for spin devices, it is necessary to have spin-split metallic surface-state bands. However, metals with strong spin-orbit coupling (e.g., Bi, Tl, Sb, Pt) induce reconstructions on silicon with almost exclusively spin-split insulating bands. We suggest to add a second adsorbate to these reconstructions in order to get spin-split metallic bands on silicon. The second adsorbate can affect the surface band structure in two ways. First, it can donate electrons to the available spin-split empty-state insulating or shallow metallic bands converting them to the well-defined metallic bands with enhanced electron filling. Corresponding example systems are Au/Si(1Â 1Â 1)3Â ÃÂ 3 modified by In, Tl, Na or Cs and Tl/Si(1Â 1Â 1) modified by extra Tl adsorption. Second, by alloying a metal with a strong spin-orbit coupling with the other suitable metal one can obtain a dense two-dimensional alloy layer on silicon which electron band structure contains spin-split metallic bands. For example, this possibility was realized by alloying Bi/Si(1Â 1Â 1)3Â ÃÂ 3 reconstruction with Na and Tl/Si(1Â 1Â 1)1Â ÃÂ 1 reconstruction with Pb. The suggested approach allows creation of the metallic surface-state bands with various spin textures on silicon and therefore enhances the possibility to integrate fascinating and promising capabilities of spintronics with current silicon-based technologies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electron Spectroscopy and Related Phenomena - Volume 201, May 2015, Pages 81-87
Journal: Journal of Electron Spectroscopy and Related Phenomena - Volume 201, May 2015, Pages 81-87
نویسندگان
D.V. Gruznev, A.V. Zotov, A.A. Saranin,