Kondo effect of nonmagnetic impurities and coexisting charge order in cuprate superconductors

Kwon Park

doi:10.1103/PhysRevB.67.094513

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Kondo effect of nonmagnetic impurities and coexisting charge order in cuprate superconductors

Kwon Park

DOI 10.1103/PhysRevB.67.094513 · Physical Review B

T1

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Abstract

We present a theory of the Kondo effect in the cuprate superconductors caused by an induced magnetic moment near nonmagnetic impurities such as Zn and Li. Based on the coexistence of charge order and superconductivity, a natural description of the induced moment and the resulting Kondo effect is obtained in the framework of the bond-operator theory of the microscopic t−J−V Hamiltonian. The local density of states near impurities is computed in a self-consistent Bogoliubov-de Gennes theory which shows a low-energy peak in the middle of superconducting gap. Our theory also suggests that the amplitude of charge order is enhanced near impurities.

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
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O6-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown