Local quasiparticle states near a Zn impurity with induced magnetic moment in a high-Tc superconductor

Jian-Xin Zhu; C. S. Ting

doi:10.1103/PhysRevB.64.060501

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Local quasiparticle states near a Zn impurity with induced magnetic moment in a high-Tc superconductor

Jian-Xin Zhu, C. S. Ting

DOI 10.1103/PhysRevB.64.060501 · Physical Review B

T1

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Abstract

The local quasiparticle density of states around a very strong nonmagnetic impurity with a Kondo-like magnetic moment induced at its nearest neighbors in a d-wave superconductor is studied. We show that the interference between the strong impurity potential scattering and the Kondo effect leads to novel quasiparticle spectra around the impurity, which are strikingly different from the case of a single unitary or magnetic impurity. The recent STM image of the local differential tunneling conductance around the Zn impurity in a high-Tc cuprate can be explained if the blocking effect of BiO surface layer between the tip and probed CuO2 plane is taken into account.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O6+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O6.95 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown