Rashba-Effect-Induced Localization in Quantum Networks

Dario Bercioux, Michele Governale, Vittorio Cataudella, and Vincenzo Marigliano Ramaglia
Phys. Rev. Lett. 93, 056802 – Published 28 July 2004

Abstract

We study a quantum network extending in one dimension (chain of square loops connected at one vertex) made up of quantum wires with Rashba spin-orbit coupling. We show that the Rashba effect may give rise to an electron localization phenomenon similar to the one induced by magnetic field. This localization effect can be attributed to the spin precession due to the Rashba effect. We present results both for the spectral properties of the infinite chain and for linear transport through a finite-size chain connected to leads. Furthermore, we study the effect of disorder on the transport properties of this network.

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  • Received 12 January 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.056802

©2004 American Physical Society

Authors & Affiliations

Dario Bercioux1, Michele Governale2, Vittorio Cataudella1, and Vincenzo Marigliano Ramaglia1

  • 1Coherentia-INFM and Dipartimento di Scienze Fisiche, Università degli studi “Federico II,” I-80126 Napoli, Italy
  • 2NEST-INFM and Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy

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Issue

Vol. 93, Iss. 5 — 30 July 2004

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