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Author | Covaci, L.; Berciu, M. | ||||
Title | Polaron formation in the presence of Rashba spin-orbit coupling: implications for spintronics | Type | A1 Journal article | ||
Year | 2009 | Publication | Physical Review Letters | Abbreviated Journal | Phys Rev Lett |
Volume | 102 | Issue | 18 | Pages | 186403 |
Keywords | A1 Journal article | ||||
Abstract | We study the effects of the Rashba spin-orbit coupling on polaron formation, using a suitable generalization of the momentum average approximation. While previous work on a parabolic band model found that spin-orbit coupling increases the effective mass, we show that the opposite holds for a tight-binding model, unless both the spin-orbit and the electron-phonon couplings are weak. It is thus possible to lower the effective mass of the polaron by increasing the spin-orbit coupling. We also show that when the spin-orbit coupling is large as compared to the phonon energy, the polaron retains only one of the spin-polarized bands in its coherent spectrum. This has major implications for the propagation of spin-polarized currents in such materials, and thus for spintronic applications. | ||||
Address | Department of Physics, University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z1 | ||||
Corporate Author | Thesis | ||||
Publisher | Place of Publication | Editor | |||
Language | English | Wos | 000265948600049 | Publication Date | 2009-05-08 |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume ![]() |
Series Issue | Edition | |||
ISSN | 0031-9007 | ISBN | Additional Links | ||
Impact Factor | 8.462 | Times cited | 25 | Open Access | |
Notes | Approved | Most recent IF: 8.462; 2009 IF: 7.328 | |||
Call Number | UA @ lucian @ | Serial | 4434 | ||
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