Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2005-02-18
J. Magn. Magn. Mater. 302, 382 (2006)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 1 figure;added some references and corrected a minor error
Scientific paper
10.1016/j.jmmm.2005.09.042
The single hole doped CuO_2 plane is studied by the O(3) non-linear \sigma
model and its CP^1 representation. It is argued that the spin configuration
around a Zhang-Rice singlet is described by a half-skyrmion. The form of the
excitation spectrum of the half-skyrmion is the same as that in the \pi-flux
phase.
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