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Sökning: WFRF:(Glazman L. I.)

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1.
  • Shekhter, Robert I., 1947, et al. (författare)
  • Electronic Aharonov-Bohm effect induced by quantum vibrations
  • 2006
  • Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 97:15
  • Tidskriftsartikel (refereegranskat)abstract
    • Mechanical displacements of a nanoelectromechanical system shift the electron trajectories and hence perturb phase coherent charge transport through the device. We show theoretically that in the presence of a magnetic field such quantum-coherent displacements may give rise to an Aharonov-Bohm-type of effect. In particular, we demonstrate that quantum vibrations of a suspended carbon nanotube result in a positive nanotube magnetoresistance, which decreases slowly with the increase of temperature. This effect may enable one to detect quantum displacement fluctuations of a nanomechanical device.
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2.
  • Fatemi, V., et al. (författare)
  • Microwave Susceptibility Observation of Interacting Many-Body Andreev States
  • 2022
  • Ingår i: Physical Review Letters. - 1079-7114 .- 0031-9007. ; 129:22
  • Tidskriftsartikel (refereegranskat)abstract
    • Electrostatic charging affects the many-body spectrum of Andreev states, yet its influence on their microwave properties has not been elucidated. We developed a circuit quantum electrodynamics probe that, in addition to transition spectroscopy, measures the microwave susceptibility of different states of a semiconductor nanowire weak link with a single dominant (spin-degenerate) Andreev level. We found that the microwave susceptibility does not exhibit a particle-hole symmetry, which we qualitatively explain as an influence of Coulomb interaction. Moreover, our state-selective measurement reveals a large, ?-phase shifted contribution to the response common to all many-body states which can be interpreted as arising from a phase-dependent continuum in the superconducting density of states.
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