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Nonequilibrium Fluctuations and Decoherence in Nanomechanical Devices Coupled to the Tunnel Junction | Anatoly Yu. Smirnov
; Lev G. Mourokh
; Norman J.M. Horing
; | Date: |
6 Sep 2002 | Journal: | Phys. Rev. 67, 115312 (2003) | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | Abstract: | We analyze the dynamics of a nanomechanical oscillator coupled to an electrical tunnel junction with an arbitrary voltage applied to the junction and arbitrary temperature of electrons in leads. We obtain the explicit expressions for the fluctuations of oscillator position, its damping/decoherence rate, and the current through the structure. It is shown that quantum heating of the oscillator results in nonlinearity of the current-voltage characteristics. The effects of mechanical vacuum fluctuations are also discussed. | Source: | arXiv, cond-mat/0209149 | Services: | Forum | Review | PDF | Favorites |
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