INVESTIGADORES
LOBOS Alejandro Martin
artículos
Título:
Kondo effect in transport through Aharonov-Bohm and Aharonov-Casher interferometers
Autor/es:
A. M. LOBOS; A. A. ALIGIA
Revista:
PHYSICA B - CONDENSED MATTER
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2009 vol. 404 p. 3306 - 3311
ISSN:
0921-4526
Resumen:
We derive the extension of the Hubbard model to include Rashba spin-orbit coupling that correctly describes Aharonov-Bohm and Aharonov-Casher phases in a ring under applied magnetic and electric fields. When the ring is connected to conducting leads, we develop a formalism that is able to describe both, Kondo and interference effects. We find that in the Kondo regime, the spin-orbit coupling reduces strongly the conductance from the unitary limit. This effect in combination with the magnetic flux, can be used to produce spin polarized carriers.
