Zeitschrift für Physik B Condensed Matter

ISSN: 0722-3277 (printed version)
ISSN: 1431-584X (electronic version)

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Abstract Volume 103 Issue 2 (1997) pp 157-159

Localized states and chiral spin texture around impurities in La₂Cu_1-xLi_xO₄

Stephan Haas

Theoretische Physik, ETH-Hönggerberg, CH-8093 Zurich, Switzerland

Abstract. Motivated by recent experimental data on Li doped La₂CuO₂, we discuss the effect of a small number of in-plane impurities on the spin and charge texture of the cuprates. In agreement with the experiment, we find a mobile hole to be partially localized close to an impurity site reducing the magnetic moment on neighboring Cu sites. The tendency to form a polarized state around the impurity site may lead to an exotic Skyrmion texture for the spins in the plane, as was previously suggested in the context of Sr doping.

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