Quantum Point Contacts and Beyond: New Results on Mesoscopic Conductance and Fluctuations

Mukunda P. Das; Frederick Green; Jagdish S. Thakur

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Quantum Point Contacts and Beyond: New Results on Mesoscopic Conductance and Fluctuations

Mukunda P. Das·Frederick Green·Jagdish S. Thakur

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Abstract

We summarize the main results of a microscopically based kinetic theory, applicable to open quantum point contacts (QPCs) driven up to high fields. The governing role of gauge invariance -- and the many-body sum rules for the electron gas -- lead to stringent constraints on both transport and fluctuations. These constraints exert a dominant influence on the observable properties of QPCs and similar open mesoscopic conductors. We illustrate this in the context of certain predictions within purely phenomenological models of mesoscopic transport.

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Mukunda P. Das, Frederick Green, Jagdish S. Thakur. 2004-04-17. Quantum Point Contacts and Beyond: New Results on Mesoscopic Conductance and Fluctuations. https://arxiv.org/abs/cond-mat/0404412

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