SwePub
Sök i SwePub databas

  Extended search

Träfflista för sökning "WFRF:(Bahrova O. M.) srt2:(2022)"

Search: WFRF:(Bahrova O. M.) > (2022)

  • Result 1-2 of 2
Sort/group result
   
EnumerationReferenceCoverFind
1.
  • Bahrova, O. M., et al. (author)
  • Cooling of nanomechanical vibrations by Andreev injection
  • 2022
  • In: Low Temperature Physics. - : AIP Publishing. - 1063-777X .- 1090-6517. ; 48:6, s. 476-482
  • Journal article (peer-reviewed)abstract
    • A nanoelectromechanical weak link composed of a carbon nanotube suspended between two normal electrodes in a gap between two superconducting leads is considered. The nanotube is treated as a movable single level quantum dot in which the position-dependent superconducting order parameter is induced due to the Cooper pair tunneling. We show that electron tunneling processes significantly affect the state of the mechanical subsystem. We found that at a given direction of the applied voltage between the electrodes, the stationary state of the mechanical subsystem has a Boltzmann form with an effective temperature dependent on the parameters of the device. As this takes place, the effective temperature can reach significantly small values (cooling effect). We also demonstrate that nanotube fluctuations strongly affect the dc current through the system. The latter can be used to probe the predicted effects in an experiment. Published under an exclusive license by AIP Publishing.
  •  
2.
  • Bahrova, O. M., et al. (author)
  • Nanomechanics driven by the superconducting proximity effect
  • 2022
  • In: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 24:3
  • Journal article (peer-reviewed)abstract
    • We consider a nanoelectromechanical weak link composed of a carbon nanotube suspended above a trench in a normal metal electrode and positioned in a gap between two superconducting leads. The nanotube is treated as a movable single-level quantum dot (QD) in which the position-dependent superconducting order parameter is induced as a result of Cooper pair tunneling. We show that in such a system, self-sustained bending vibrations can emerge if a bias voltage is applied between normal and superconducting electrodes. The occurrence of this effect crucially depends on the direction of the bias voltage and the relative position of the QD level. We also demonstrate that the nanotube vibrations strongly affect the dc current through the system, a characteristic that can be used for the direct experimental observation of the predicted phenomenon.
  •  
Skapa referenser, mejla, bekava och länka
  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Shekhter, Robert I., ... (2)
Gorelik, Leonid, 195 ... (2)
Bahrova, O. M. (2)
Kulinich, S. I. (2)
Park, H. C. (2)
University
University of Gothenburg (2)
Chalmers University of Technology (2)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (2)
Engineering and Technology (1)
Year
2022 (2)Undo refine

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view