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26 November 2020
 
  » arxiv » cond-mat/0103608

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Fractional and unquantized dc voltage generation in THz-driven semiconductor superlattices
Kirill N. Alekseev ; Ethan H. Cannon ; Feodor V. Kusmartsev ; David K. Campbell ;
Date 29 Mar 2001
Journal Europhysics Letters 56 (2001) 842; Erratum: 68 (2004) 753 DOI: 10.1209/epl/i2001-00596-9
Subject Mesoscopic Systems and Quantum Hall Effect; Statistical Mechanics; Chaotic Dynamics | cond-mat.mes-hall cond-mat.stat-mech nlin.CD
AbstractWe consider the spontaneous creation of a dc voltage across a strongly coupled semiconductor superlattice subjected to THz radiation. We show that the dc voltage may be approximately proportional either to an integer or to a half- integer multiple of the frequency of the applied ac field, depending on the ratio of the characteristic scattering rates of conducting electrons. For the case of an ac field frequency less than the characteristic scattering rates, we demonstrate the generation of an unquantized dc voltage.
Source arXiv, cond-mat/0103608
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