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Local antiferromagnetic moment induced by Zn impurity in high-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="normal">T</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:mrow></mml:math>superconducting copper oxides: A resonating-valence-bond picture
Based on a Gutzwiller projected BCS wave function, it is shown that a local $S=1∕2$ moment is present around a vacancy site (zinc impurity) in a form of staggered magnetic moments, which is a direct consequence of the short-range resonating-valence-bond pairing in the spin background.