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Kondo effect in quantum dots coupled to ferromagnetic leads with noncollinear magnetizations

✍ Scribed by R. Świrkowicz; W. Rudziński; M. Wilczyński; M. Wawrzyniak; J. Barnaś

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
95 KB
Volume
378-380
Category
Article
ISSN
0921-4526

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✦ Synopsis

Non-equilibrium Green's function technique has been used to calculate spin-dependent electronic transport through a quantum dot in the Kondo regime. The dot is described by the Anderson Hamiltonian and is coupled symmetrically to two ferromagnetic leads, whose magnetic moments are noncollinear. It is shown that the splitting of the zero bias Kondo anomaly in differential conductance decreases monotonously with increasing angle between magnetizations, and vanishes in the limit of antiparallel configuration.

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✍ W. Rudziński; R. Świrkowicz; M. Wilczyński; J. Barnaś 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 164 KB

## Abstract Electron tunneling through a spin‐split discrete level of an interacting quantum dot coupled to two ferromagnetic electrodes with non‐collinear magnetizations is investigated theoretically by means of the nonequilibrium Green function approach. It is shown that the spin splitting of the