https://doi.org/10.1140/epjb/e2014-50387-6
Regular Article
Spin thermopower in interacting Rashba dots
Department of Physics, Federal University of
Amazonas, Av. Rodrigo Octavio
3000-Japiim, 69077-000
Manaus, AM, Brazil
a
e-mail: angsula@ufam.edu.br
Received:
11
June
2014
Received in final form:
14
August
2014
Published online:
1
November
2014
Spintronics or spin electronics has been an active area of research based on the active control and manipulation of spin degrees of freedom. In this work we study the thermoelectric properties of a Rashba dot using the Anderson model in presence of the repulsive Coulomb interaction within the mean-field formalism. The temperature difference applied across the dot drives a spin current which depends on the Rashba coupling and chemical potential. We demonstrate that the Rashba dot in presence of the Coulomb interaction behaves as a spin filter for selected values of the chemical potential and is able to filter electrons by their spin orientation. The spin thermopower has also been studied where the effects of the impurity energy level, temperature and also the Rashba term have been observed.
Key words: Solid State and Materials
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2014
