Zinc Impurities in [Formula presented]-Wave Superconductors

Th A. Maier; M. Jarrell

doi:10.1103/PhysRevLett.89.077001

Zinc Impurities in [Formula presented]-Wave Superconductors

Th A. Maier, M. Jarrell

Research output: Contribution to journal › Article › peer-review

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Abstract

We study the two-dimensional Hubbard model with nonmagnetic Zn impurities modeled by binary diagonal disorder using quantum Monte Carlo within the dynamical cluster approximation. With increasing Zn content we find a strong suppression of [Formula presented]-wave superconductivity and an enhancement of antiferromagnetic spin correlations. [Formula presented] vanishes linearly with Zn impurity concentration. The spin susceptibility changes from pseudogap to Curie-Weiss-like behavior indicating the existence of free magnetic moments in the Zn doped system. We interpret these results within the resonating-valence-bond picture.

Original language	English
Journal	Physical Review Letters
Volume	89
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.89.077001
State	Published - 2002
Externally published	Yes

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10.1103/PhysRevLett.89.077001

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title = "Zinc Impurities in [Formula presented]-Wave Superconductors",

abstract = "We study the two-dimensional Hubbard model with nonmagnetic Zn impurities modeled by binary diagonal disorder using quantum Monte Carlo within the dynamical cluster approximation. With increasing Zn content we find a strong suppression of [Formula presented]-wave superconductivity and an enhancement of antiferromagnetic spin correlations. [Formula presented] vanishes linearly with Zn impurity concentration. The spin susceptibility changes from pseudogap to Curie-Weiss-like behavior indicating the existence of free magnetic moments in the Zn doped system. We interpret these results within the resonating-valence-bond picture.",

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AB - We study the two-dimensional Hubbard model with nonmagnetic Zn impurities modeled by binary diagonal disorder using quantum Monte Carlo within the dynamical cluster approximation. With increasing Zn content we find a strong suppression of [Formula presented]-wave superconductivity and an enhancement of antiferromagnetic spin correlations. [Formula presented] vanishes linearly with Zn impurity concentration. The spin susceptibility changes from pseudogap to Curie-Weiss-like behavior indicating the existence of free magnetic moments in the Zn doped system. We interpret these results within the resonating-valence-bond picture.

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DO - 10.1103/PhysRevLett.89.077001

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JO - Physical Review Letters

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Zinc Impurities in [Formula presented]-Wave Superconductors

Abstract

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