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      Spin Dependent Joule Heating due to Rashba Coupling and Zitterbewegung

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          Abstract

          Investigating microwave absorption in asymmetric Si quantum wells in an external magnetic field, we discover a spin dependent component of Joule heating at spin resonance. We explain this effect in terms of Rashba spin-orbit coupling which results in a current induced spin precession and Zitterbewegung. Evidence is based on the observation of a specific dependence of the electron spin resonance line shape and its amplitude on the experimental geometry which in some range suggests a "negative" differential power absorption.

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          Journal
          2010-01-21
          2010-01-25
          1001.3746

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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          5 pages, 3 figures
          cond-mat.mtrl-sci

          Condensed matter

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