2009/02/12 by Alejandro M. Lobos, A. M. Lobos, A. A. Aligia · 4 citations
Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Aharonov–Bohm effect #Condensed matter physics #Conductance #Coupling (piping) #Electron #Formalism (music) #Kondo effect #Magnetic field #Magnetic flux #Materials science #Physics #Quantum and electron transport phenomena #Quantum electrodynamics #Quantum mechanics #Semiconductor materials and devices #Spin–orbit interaction #Unitary state #cond-mat.str-el
paper · pdf · doi:10.1016/j.physb.2009.07.093
published in Physica B Condensed Matter 404(19), 3306-3311 (Elsevier BV) · 6 pages, 4 figures, presented at SCES2008, Buzios, Brasil
arxiv created 2009/02/12 · openalex publication_date 2009/07/08 · arxiv updated 2015/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.