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Title: | First-principle approach to the study of spin relaxation times of excited electrons in metals |
Authors: | Zhukov, Vladlen P.; Chulkov, Eugene V. CSIC ORCID; Echenique, Pedro M. CSIC | Keywords: | [PACS] Relaxation times and mean free paths [PACS] Spin polarized transport in metals [PACS] Spin relaxation and scattering |
Issue Date: | 2-May-2008 | Publisher: | John Wiley & Sons | Citation: | Physica Status Solidi A: Aplications and Materials 205(6): 1296-1301 (2008) | Abstract: | We have developed a first-principle method of calculating the spin-lattice relaxation time of excited electrons in metals based on the GW approach incorporating spin-orbit coupling. We have studied the spin-lattice relaxation time and path in Al, Cu, Au, Nb and Ta. The spin-lattice relaxation time and path in Nb appear to be much less than in Al, Cu, Au. They are particularly small in Ta, in accord with strong spin-orbit coupling. Comparing our results with experimental data on the impurity- and phonon-induced spin relaxation times and path's, we find that at the energy about of 0.9 eV, which is typical for excited electrons in spin-valve and magnetic-tunnel transistors, the inelastic scattering accompanied by creation of electron-hole pairs is the dominating mechanism of spin-lattice relaxation. |
Description: | 6 pages, 4 figures.-- PACS nrs.: 72.15.Lh, 72.25.Ba, 72.25.Rb.-- Presented as poster communication to TNT 2007: Trends in NanoTechnology (San Sebastián, Spain, Sep 3-7, 2008). | Publisher version (URL): | http://dx.doi.org/10.1002/pssa.200778141 | URI: | http://hdl.handle.net/10261/8482 | DOI: | 10.1002/pssa.200778141 | ISSN: | 0031-8965 |
Appears in Collections: | (CFM) Artículos |
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