Spin-polarized transport through a quantum dot: Anderson model with on-site Coulomb repulsion
By N. Sergueev, Qing-feng Sun, Hong Guo, B. G. Wang, Jian Wang. 2002
145 citations recorded by the source corpus.
We report on a theoretical analysis of transport characteristics of a spin-valve system formed by a quantum dot connecting to two ferromagnetic electrodes whose magnetic moments are oriented at an angle theta with respect to each other. We pay special attention to the effects of a finite on-site Coulomb repulsion U. Using the Keldysh nonequilibrium Green's functions we derived a formula for the current in general terms of bias, temperature, and the parameters theta,U. We have studied the local density of states and nonlinear conductance of this device in the Kondo regime at different polarization angle theta. Our results suggest that the Kondo peaks in the local density of states and in the conductance can be modulated by theta.
Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/065b585fbf1b5d1420dd97e429eaed09e175f5c1
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In Atomic and Molecular Physics, and Optics
In Electrical and Electronic Engineering
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Citations in the corpus
- Electrostatic modification of novel materials (2006, background): “Such Kondo systems with ferromagnetic electrodes have been the subject of a number of theoretical treatments e.g., Sergueev et al., 2002; Zhang et al., 2002; Bulka and Lipinski, 2003; Lopez and Sanchez, 2003; Martinek et al., 2003 and have been suggested as model systems for examining many-body…”