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arXiv · cond-mat/9904061

Nondissipative Drag Conductance as a Topological Quantum Number

Kun Yang·A. H. MacDonald
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Abstract

We show in this paper that the boundary condition averaged nondissipative drag conductance of two coupled mesoscopic rings with no tunneling, evaluated in a particular many-particle eigenstate, is a topological invariant characterized by a Chern integer. Physical implications of this observation are discussed.

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Kun Yang, A. H. MacDonald. 2001-01-24. Nondissipative Drag Conductance as a Topological Quantum Number. https://doi.org/10.1103/physrevb.63.073301

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