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26 April 2024 |
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Spontaneous current generation in gated nanostructures | | D. W. Horsell
; A. K. Savchenko
; Y. M. Galperin
; V. I. Kozub
; V. M. Vinokur
; D. A. Ritchie
; | | Date: |
24 Nov 2004 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Affiliation: | 2,3,4), V. I. Kozub (3,4), V. M. Vinokur and D. A. Ritchie ( School of Physics, University of Exeter, Exeter, UK, Department of Physics, University of Oslo, Oslo, Norway, A. F. Ioffe Physico-Technical Institute of Russian Academy of Sciences, St P | | Abstract: | We have observed an unusual dc current spontaneously generated in the conducting channel of a short-gated GaAs transistor. The magnitude and direction of this current critically depend upon the voltage applied to the gate. We propose that it is initiated by the injection of hot electrons from the gate that relax via phonon emission. The phonons then excite secondary electrons from asymmetrically distributed impurities in the channel, which leads to the observed current. | | Source: | arXiv, cond-mat/0411606 | | Services: | Forum | Review | PDF | Favorites | |
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