Gauge field theory approach to spin transport in a 2D electron gas

B. Berche, N. Bolívar, A. López, E. Medina

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

11 Citas (Scopus)


We discuss the Pauli Hamiltonian including the spin-orbit interaction within an U(1) × SU(2) gauge theory interpretation, where the gauge symmetry appears to be broken. This interpretation offers new insight into the problem of spin currents in the condensed matter environment, and can be extended to Rashba and Dresselhaus spin-orbit interactions. We present a few outcomes of the present formulation: i) it automatically leads to zero spin conductivity, in contrast to predictions of Gauge symmetric treatments, ii) a topological quantization condition leading to voltage quantization follows, and iii) spin interferometers can be conceived in which, starting from an arbitrary incoming unpolarized spinor, it is always possible to construct a perfect spin filtering condition.

Idioma originalInglés
Páginas (desde-hasta)707-716
Número de páginas10
PublicaciónCondensed Matter Physics
EstadoPublicada - 2009
Publicado de forma externa


Profundice en los temas de investigación de 'Gauge field theory approach to spin transport in a 2D electron gas'. En conjunto forman una huella única.

Citar esto