Spin transport through nanostructures

• Autorzy: Kramer, B. , Dittmer, K. , Debald, S. , Ohe, J. , Cavaliere, F. , Sassetti, M.
• Języki publikacji: EN

Abstrakty

EN

The influences of non-Fermi liquid correlations and spin-orbit scattering on the transport properties of quantum nanostructures connected to interacting leads are studied. Signatures of the spin are investigated in the transport. One-dimensional quantum dot is studied in the sequential tunnelling regime using the master equation approach. Quantum coherent conductance is calculated using the transfer matrix method for a quasi-one dimensional system with the Rashba coupling Hamiltonian, and for a two -dimensional quantum dot in a multi-terminal geometry modelled by the Ando Hamiltonian. In the sequential tunnelling regime, states with a higher total spin can be stabilized by suitably adjusting bias and gate voltages. Spin polarized current can be achieved by locally applying a magnetic field. For coherent linear transport through a multi-terminal device at zero magnetic field, we find a spin polarized current at certain energies, induced by spin-orbit scattering.

Słowa kluczowe

EN

spin transport; nanostructures; quantum dot; Rashba coupling

• Czasopismo: Materials Science Poland
• Rocznik: 2004
• Tom: Vol. 22, No. 4
• Strony: 445--460
• Opis fizyczny: Bibliogr. 20 poz.

Twórcy

autor

Kramer, B.

• Institut für Theoretische Physik, Universität Hamburg, Jungiusstraße 9, 20355 Hamburg, Germany,

autor

Dittmer, K.

• Institut für Theoretische Physik, Universität Hamburg, Jungiusstraße 9, 20355 Hamburg, Germany

autor

Debald, S.

• Institut für Theoretische Physik, Universität Hamburg, Jungiusstraße 9, 20355 Hamburg, Germany

autor

Ohe, J.

• Institut für Theoretische Physik, Universität Hamburg, Jungiusstraße 9, 20355 Hamburg, Germany

autor

Cavaliere, F.

• Institut für Theoretische Physik, Universität Hamburg, Jungiusstraße 9, 20355 Hamburg, Germany
• INFM-Lamia, Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy

autor

Sassetti, M.

• INFM-Lamia, Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy

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