Spin-twist driven persistent current in a strongly correlated two-dimensional electron system: a manifestation of the gauge field

K. Kusakabe; H. Aoki

doi:10.1103/physrevb.52.r8684

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Spin-twist driven persistent current in a strongly correlated two-dimensional electron system: a manifestation of the gauge field

K. Kusakabe·H. Aoki

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Abstract

A persistent current, coupled with the spin state, of purely many-body origin is shown to exist in Nagaoka's ferromagnetic state in two dimensions (2D). This we regard as a manifestation of a gauge field, which comes from the surrounding spin configuration and acts on the hole motion, being coupled to the Aharonov-Bohm flux. This provides an example where the electron-electron interaction exerts a profound effect involving the spins in clean two-dimensional lattice systems in sharp contrast to continuum or spinless fermion systems.

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K. Kusakabe, H. Aoki. 1995-09-07. Spin-twist driven persistent current in a strongly correlated two-dimensional electron system: a manifestation of the gauge field. https://doi.org/10.1103/physrevb.52.r8684

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