Inelastic light scattering by a two-dimensional electron system with Rashba spin-orbit coupling |
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Authors: | R?Z?Vitlina L?I?Magarill Email author" target="_blank">A?V?ChaplikEmail author |
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Institution: | 1.Rzhanov Institute of Semiconductor Physics, Siberian Branch,Russian Academy of Sciences,Novosibirsk,Russia;2.Novosibirsk State University,Novosibirsk,Russia |
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Abstract: | Inelastic light scattering by a two-dimensional system of electrons in a conduction band with Rashba spinorbit coupling is
studied theoretically for the resonance case where the frequencies of the incident and scattered light are close to the effective
distance between the conduction band and spin-split band in a III–V semiconductor. It is shown that, in contrast to the case
of no spin-orbit coupling, the spectrum of the scattered light exhibits a plasmon peak even for strictly perpendicular polarizations
of the incident and scattered light. There exists a configuration where the scattering spectrum exhibits features originating
from single-particle transitions only. Furthermore, it is shown that, for the general case of elliptic polarizations of the
incident and scattered light, the amplitude of the plasmon peak depends on the sign of the effective Rashba spinorbit coupling
constant and the signs of the phases of the polarization vectors. This fact can be used to determine the sign of the Rashba
constant. |
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Keywords: | |
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