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Condensed Matter Seminars

ics Condensed Matter
Thursday, September 22, 2005
4:00 PM
Physics Building, Room 204
Note special time.
Note special room.
Maxim Vavilov [Host: Jongsoo Yoon]
Yale University
"Current-Induced Spin Polarization of 2DEG in Perpendicular Magnetic Field"
An electric field applied to a two-dimensional electron gas with spin-orbit coupling generates spin magnetization. Based on a quantum kinetic equation, we study the dependence of the magnitude and direction of the spin magnetization on the strength of a perpendicular magnetic field. We show that as magnetic field increases, the magnitude of the magnetization decreases. However, in sufficiently strong magnetic fields, the magnetization acquires a giant oscillating component; the amplitude of this component may exceed the magnetization at zero magnetic field. The large amplitude of magnetization oscillations is related to the enhanced electron-hole asymmetry in quantizing magnetic fields.

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