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Effect of temperature and bias voltage on the conductance distribution of disordered 1d quantum wires | | Victor A. Gopar
; Peter Woelfle
; | | Date: |
14 Jul 2005 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Abstract: | The statistical properties of the conductance of one dimensional disordered systems are studied at finite bias voltage V and temperature T, in an independent-electron picture. We calculate the complete distribution of the conductance P(G) in different regimes of V, T within a statistical model of resonant tunneling transmission. We find that P(G) changes from the well-known log-normal distribution at T=0 in the linear response regime to a Gaussian distribution at large V, T. The dependence on T and V of average quantities such as < G >, < ln G > is analyzed as well. Our analytical results are confirmed by numerical simulations. We also discuss the limits of validity of the model and conclude that the effects of finite T, V presented here should be observable. | | Source: | arXiv, cond-mat/0507339 | | Services: | Forum | Review | PDF | Favorites | |
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