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Non-Abelian gauge fields in the gradient expansion: generalized Boltzmann and Eilenberger equations
Umeå University, Faculty of Science and Technology, Department of Physics. 5 Ioffe Physicotechnical Institute, RAS, St. Petersburg, Russia. (Quantum group)
2010 (English)In: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 82, no 19, 195316Article in journal (Refereed) Published
Abstract [en]

We present a microscopic derivation of the generalized Boltzmann and Eilenberger equations in the presence of non-Abelian gauges for the case of a nonrelativistic disordered Fermi gas. A unified and symmetric treatment of the charge [U(1)] and spin [SU(2)] degrees of freedom is achieved. Within this framework, just as the U(1) Lorentz force generates the Hall effect, so does its SU(2)counterpart gives rise to the spin Hall effect. Considering elastic and spin-independent disorder we obtain diffusion equations for charge and spin densities and show how the interplay between an in-plane magnetic field and a time-dependent Rashba term generates in-plane charge currents.

Place, publisher, year, edition, pages
2010. Vol. 82, no 19, 195316
National Category
Physical Sciences
Research subject
URN: urn:nbn:se:umu:diva-40255DOI: 10.1103/PhysRevB.82.195316ISI: 000284205400004OAI: diva2:398841
Available from: 2011-02-19 Created: 2011-02-19 Last updated: 2015-10-06Bibliographically approved

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