Kondo effect in a Aharonov-Casher interferometer

A. V. Parafilo, L. Y. Gorelik, M. N. Kiselev, H. C. Park, and R. I. Shekhter
Phys. Rev. B 100, 235413 – Published 9 December 2019

Abstract

We consider a model describing a spin field-effect transistor based on a quantum nanowire with a tunable spin-orbit interaction embedded between two ferromagnetic leads with anticollinear magnetization. We investigate a regime of a strong interplay between resonance Kondo scattering and interference associated with the Aharonov-Casher effect. Using the Keldysh technique at a weak-coupling regime we calculate perturbatively the charge current. It is predicted that the effects of the spin-orbit interaction result in a nonvanishing current for any spin polarization of the leads including the case of fully polarized anticollinear contacts. We analyze the influence of the Aharonov-Casher phase and degree of spin polarization in the leads onto a Kondo temperature.

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  • Received 15 September 2019
  • Revised 20 November 2019

DOI:https://doi.org/10.1103/PhysRevB.100.235413

©2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

A. V. Parafilo1,*, L. Y. Gorelik2, M. N. Kiselev3, H. C. Park1,†, and R. I. Shekhter4

  • 1Center for Theoretical Physics of Complex Systems, Institute for Basic Science, Expo-ro, 55, Yuseong-gu, Daejeon 34126, Republic of Korea
  • 2Department of Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
  • 3The Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, I-34151 Trieste, Italy
  • 4Department of Physics, University of Gothenburg, SE-412 96 Göteborg, Sweden

  • *aparafil@ibs.re.kr
  • hc2725@gmail.com

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Issue

Vol. 100, Iss. 23 — 15 December 2019

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