Thermally induced spin polarization of a two-dimensional electron gas

被引：28
|
作者：
Dyrdal, A. [1 ]
Inglot, M. [2 ]
Dugaev, V. K. [2 ,3 ]
Barnas, J. [1 ,4 ]
机构：
[1] Adam Mickiewicz Univ, Fac Phys, PL-61614 Poznan, Poland
[2] Rzeszow Univ Technol, Dept Phys, PL-35959 Rzeszow, Poland
[3] Univ Tecn Lisboa, Inst Super Tecn, Dept Phys, P-1049001 Lisbon, Portugal
[4] Polish Acad Sci, Inst Mol Phys, PL-60179 Poznan, Poland
来源：
PHYSICAL REVIEW B | 2013年 / 87卷 / 24期
关键词：
ORIENTATION;
D O I：
10.1103/PhysRevB.87.245309
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Spin polarization of a two-dimensional electron gas with Rashba spin-orbit interaction, induced by a thermocurrent, is considered theoretically. It is shown that a temperature gradient gives rise to an in-plane spin polarization of the electron gas, which is normal to the temperature gradient. The low-temperature spin polarization changes sign when the Fermi level crosses the bottom edge of the upper electronic subband. We also compare the results with spin polarization induced by an external electric field (current).
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页数：5
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