Some unique magnetic properties of nanoscale quantum rings subjected to a Rashba spin-orbit interaction

Hong-Yi Chen, Pekka Pietiläinen, and Tapash Chakraborty
Phys. Rev. B 78, 073407 – Published 27 August 2008

Abstract

Quantum rings subjected to a Rashba spin-orbit coupling and an external magnetic field possess interesting magnetic properties. Specifically, the spectral linewidth of magnetic susceptibility is found to be independent of the ring geometry. For zero spin-orbit coupling it varies linearly with temperature and the slope is proportional to a scaling factor of material parameters. When the spin-orbit interaction is switched on, there is a turning temperature below which the spin-orbit coupling strength is directly measurable. The upper bound of the turning temperature is also investigated.

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  • Received 9 June 2008

DOI:https://doi.org/10.1103/PhysRevB.78.073407

©2008 American Physical Society

Authors & Affiliations

Hong-Yi Chen, Pekka Pietiläinen, and Tapash Chakraborty

  • Department of Physics and Astronomy, University of Manitoba, Winnipeg, Canada R3T 2N2

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Issue

Vol. 78, Iss. 7 — 15 August 2008

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