# Spin tunneling, Berry phases, and doped antiferromagnets.

@article{Auerbach1993SpinTB,
title={Spin tunneling, Berry phases, and doped antiferromagnets.},
author={Auerbach},
journal={Physical review. B, Condensed matter},
year={1993},
volume={48 5},
pages={
3287-3289
}
}
• Auerbach
• Published 10 December 1992
• Physics, Medicine
• Physical review. B, Condensed matter
Interference effects between Berry-phase factors in spin-tunneling systems have been discussed by several groups in the context of quantum magnets. I point out that similar effects appear in the semiclassical analysis of the two-dimensional doped antiferromagnet. As a consequence, the sign of the dispersion of a spin polaron in the t-J model depends on the spin size s in ${\mathit{e}}^{\mathit{i}2\mathrm{\ensuremath{\pi}}\mathit{s}}$. Thus we arrive at a semiclassical interpretation of the…
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