Local antiferromagnetic moment induced by Zn impurity in high-Tc superconducting copper oxides: A resonating-valence-bond picture
Tao Li, Qiang-Hua Wang, Zheng-Yu Weng, Fan Yang, Fu-Chun Zhang
DOI 10.1103/PhysRevB.73.212504 · Physical Review B
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Abstract
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.
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