Random matrix approach to `nonuniversal' conductance

Recent experiments on the conductance of high quality quantum wires have revealed an unexpected feature: the quantization step of the conductance is apparently system dependent. We provide the understanding of this behaviour using the appropriately extended random matrix approach. A single additiona...

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Bibliographic Details
Published in:arXiv.org 1997-12
Main Authors: Seba, Petr, Zyczkowski, Karol, Zakrzewski, Jakub
Format: Article
Language:English
Subjects:
Measurement
Quantum wires
Resistance
Online Access:Get full text
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Summary:Recent experiments on the conductance of high quality quantum wires have revealed an unexpected feature: the quantization step of the conductance is apparently system dependent. We provide the understanding of this behaviour using the appropriately extended random matrix approach. A single additional parameter governs the size of the conductance quantization steps. In effect the behaviour seems to remain `universal', generic for the conductance of a class of mesoscopic systems.
ISSN:2331-8422