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Sökning: WFRF:(Shkop A. D.)

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1.
  • Ilinskaya, O. A., et al. (författare)
  • Coulomb effects on thermally induced shuttling of spin-polarized electrons
  • 2019
  • Ingår i: Low Temperature Physics. - : AIP Publishing. - 1063-777X .- 1090-6517. ; 45:9, s. 1032-1040
  • Tidskriftsartikel (refereegranskat)abstract
    • A thermally driven single-electron transistor with magnetic leads and a movable central island (a quantum dot) subject to an external magnetic field is considered. The possibility of a mechanical instability caused by magnetic exchange interactions between spin-polarized electrons in this system was studied by the density matrix method. We proved analytically that for noninteracting electrons in the dot there is no such mechanical instability. However, for finite strengths of the Coulomb correlations in the dot we numerically found critical magnetic fields separating regimes of mechanical instability and electron shuttling on the one hand and damped mechanical oscillations on the other. It was shown that thermally induced magnetic shuttling of spin-polarized electrons is a threshold phenomenon, and the dependence of the threshold bias temperature on model parameters was calculated.
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2.
  • Shkop, A. D., et al. (författare)
  • Low-energy anomalies in electron tunneling through strongly asymmetric Majorana nanowire
  • 2016
  • Ingår i: Low Temperature Physics. - : AIP Publishing. - 1063-777X .- 1090-6517. ; 42:4, s. 308-312
  • Tidskriftsartikel (refereegranskat)abstract
    • Electron transport through Majorana nanowire with strongly asymmetric couplings to normal metal leads is considered. In three terminal geometry (electrically grounded nanowire) it is shown that the presence of unbiased electrode restores zero-bias anomaly even for strong Majorana energy splitting. For effectively two-terminal geometry we show that electrical current through asymmetric Majorana junction is qualitatively different from the analogous current through a resonant (Breit-Wigner) level. Published by AIP Publishing.
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Shkop, A. D. (2)
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