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Effect of charge-spin separation on the conductance through interacting low-dimensional rings
(Elsevier Science, 2009-10)
We calculate the conductance through Aharonov-Bohm chain and ladder rings pierced by a magnetic flux which couples with the charge degrees of freedom. The system is weakly coupled to two leads and contains strongly interacting ...
Features of spin-charge separation in the equilibrium conductance through finite rings
(American Physical Society, 2009-01)
We calculate the conductance through rings with few sites L described by the t-J model, threaded by a magnetic flux Φ and weakly coupled to conducting leads at two arbitrary sites. The model can describe a circular array ...
Spin-charge separation in Aharonov-Bohm rings of interacting electrons
(American Physical Society, 2004-08-06)
We investigate the properties of strongly correlated electronic models on a flux-threaded ring connected to semi-infinite free-electron leads. The interference pattern of such an Aharonov-Bohm ring shows sharp dips at ...
Detecção elétrica de correntes de spin em sistemas nano-estruturados
(Universidade Federal de Santa MariaCentro de Ciências Naturais e Exatas, 2016-12-15)
Spintronics is an emergent research field that seeks a better understanding of the role of electronic spin in solid state physics. Exploring electrons’ charge and spin, significant technological advances might be achieved, ...
Quantum properties in transport through nanoscopic rings: Charge-spin separation and interference effects
(World Scientific, 2010-10)
Many of the most intriguing quantum effects are observed or could be measured in transport experiments through nanoscopic systems such as quantum dots, wires and rings formed by large molecules or arrays of quantum dots. ...
Spin-charge separation and topological phase transitions in Aharonov-Bohm rings of interacting electrons
(World Scientific, 2006-07)
We investigate the properties of strongly correlated electronic models on a flux-threaded ring connected to semi-infinite free-electron leads. The interference pattern of such an Aharonov-Bohm ring shows sharp dips at ...
Conductance through strongly interacting rings in a magnetic field
(Elsevier Science, 2009-08)
We study the conductance through finite Aharonov-Bohm rings of interacting electrons weakly coupled to non-interacting leads at two arbitrary sites. This model can describe an array of quantum dots with a large charging ...
The effect of additional Si and SiGe layers on the confinement potential of GeMn diluted ferromagnetic semiconductor
(ELSEVIER SCIENCE BV, 2008)
In this work we analyze the spin-polarized charge density distribution in the GeMn diluted ferromagnetic semiconductors (DFS). The calculations are performed within a self-consistent k.p method, in which the exchange ...
Spin-orbit coupling and electron spin resonance for interacting electrons in carbon nanotubes
(IOP Publishing, 2004-05)
We review the theoretical description of spin-orbit (SO) scattering and electron spin resonance (ESR) in carbon nanotubes. Particular emphasis is laid on the effects of electron-electron interactions. The SO coupling is ...
Spin order in one-dimensional Kondo and Hund lattices
(American Physical SocCollege PkEUA, 2004)