Transient thermoelectricity in a vibrating quantum dot in Kondo regime

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Goker A., Uyanik B.

PHYSICS LETTERS A, cilt.376, ss.2735-2738, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 376
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.physleta.2012.07.025
  • Dergi Adı: PHYSICS LETTERS A
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2735-2738
  • Çukurova Üniversitesi Adresli: Evet

Özet

We investigate the time evolution of the thermopower in a vibrating quantum dot suddenly shifted into the Kondo regime via a gate voltage by adopting the time-dependent non-crossing approximation and linear response Onsager relations. Behavior of the instantaneous thermopower is studied for a range of temperatures both in zero and strong electron-phonon coupling. We argue that inverse of the saturation value of decay time of thermopower to its steady state value might be an alternative tool in determination of the Kondo temperature and the value of the electron-phonon coupling strength. (C) 2012 Elsevier B.V. All rights reserved.