Nondissipative Drag Conductance as a Topological Quantum Number

Details Nondissipative Drag Conductance as a Topological Quantum Number Nondissipative Drag Conductance as a Topological Quantum Number

1999-04-05

arxiv.org/abs/cond-mat/9904061v2

Phys. Rev. B 63, 073301 (2001).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, no figure. Title modified and significant revision made to the text. Final version appeared in PRB

Scientific paper

10.1103/PhysRevB.63.073301

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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