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Spontaneous Spin Polarization in Quantum Wires

A. D. Klironomos·J. S. Meyer·K. A. Matveev
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Abstract

A number of recent experiments report spin polarization in quantum wires in the absence of magnetic fields. These observations are in apparent contradiction with the Lieb-Mattis theorem, which forbids spontaneous spin polarization in one dimension. We show that sufficiently strong interactions between electrons induce deviations from the strictly one-dimensional geometry and indeed give rise to a ferromagnetic ground state in a certain range of electron densities.

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A. D. Klironomos, J. S. Meyer, K. A. Matveev. 2005-07-16. Spontaneous Spin Polarization in Quantum Wires. https://doi.org/10.1209/epl%2Fi2006-10024-x

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