Quantum networks in the presence of the Rashba effect and a magnetic field

Bercioux, D.; Governale, M.; Cataudella, V.; Ramaglia, V. M.

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Tytuł artykułu

Quantum networks in the presence of the Rashba effect and a magnetic field

Autorzy

Bercioux D. , Governale M. , Cataudella V. , Ramaglia V. M.

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Abstrakty

We use a simple formalism to calculate the conductance of any quantum network consisting of single-channel one-dimensional quantum wires in the presence of Rashba spin-orbit coupling and a coupling magnetic field. We show that the Rashba effect may give rise to an electron localization phenomenon similar to the Aharonov-Bohm effect. This localization effect can be attributed to spin precession due to the Rashba effect. We present results for linear transport through a finite-size chain connected to leads, taking also the effect of disorder into account. The effects of applying a magnetic field and Rashba spinorbit coupling are studied in two-dimensional networks, showing that their interplay can lead the system to a transition between localized and anti-localized behaviour.

Słowa kluczowe

Rashba effect quantum networks Aharonov-Bohm effect localization

Wydawca

De Gruyter

Czasopismo

Materials Science Poland

Rocznik

2004

Tom

Vol. 22, No. 4

Strony

553--563

Opis fizyczny

Bibliogr. 22 poz.

Twórcy

autor

Bercioux D.

dario.bercioux@na.infn.it.

Coherentia-INFM and Dipartimento di Scienze Fisiche Universita degli studi Federico II, I-80126 Napoli, Italy

autor

Governale M.

2NEST-INFM and Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy

autor

Cataudella V.

Coherentia-INFM and Dipartimento di Scienze Fisiche Universita degli studi Federico II, I-80126 Napoli, Italy

autor

Ramaglia V. M.

Coherentia-INFM and Dipartimento di Scienze Fisiche Universita degli studi Federico II, I-80126 Napoli, Italy

Bibliografia

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