Aharonov-Bohm magnetization of mesoscopic rings caused by inelastic relaxation

Details Aharonov-Bohm magnetization of mesoscopic rings caused by inelastic relaxation Aharonov-Bohm magnetization of mesoscopic rings caused by inelastic relaxation

2002-04-08

arxiv.org/abs/cond-mat/0204176v2

Phys. Rev. Lett., v.89, 176601 (2002).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages RevTeX, two figures

Scientific paper

10.1103/PhysRevLett.89.176601

The magnetization of a system of many mesoscopic rings under non-equilibrium conditions is considered. The corresponding disorder-averaged current in a ring is shown to be a sum of the `thermodynamic' and `kinetic' contributions both resulting from the electron-electron interaction. The thermodynamic part can be expressed through the diagonal matrix elements of the current operator in the basis of exact many-body eigenstates and is a generalization of the equilibrium persistent current. The novel kinetic part is present only out of equilibrium and is governed by the off-diagonal matrix elements. It has drastically different temperature and magnetic field behavior.

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