Influence of magnetic imperfections on the low-temperature properties of [ital d]-wave superconductors

Journal Article · Fri Jul 01 00:00:00 EDT 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.50.582· OSTI ID:7041709

Balatsky, A V ^[1]; Monthoux, P ^[2]; Pines, D ^[3]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 and Landau Institute for Theoretical Physics, Moscow (Russian Federation)
2. Institute for Theoretical Physics, University of California, Santa Barbara, California 93106-9530 (United States)
3. Department of Physics, University of Illinois, 1110 West Green Street, Urbana, Illinois 61801-3080 (United States)

We consider the influence of planar magnetic'' imperfections which destroy the local magnetic order, such as Zn impurities or Cu[sup 2+] vacancies, on the low-temperature properties of the cuprate superconductors. In the unitary limit, at low temperatures, for a [ital d][sub [ital x]][sup 2][minus][ital y][sup 2] pairing state such imperfections produce low-energy quasiparticles with an anistropic spectrum in the vicinity of the nodes. We find that for the La[sub 2[minus][ital x]]Sr[sub [ital x]]CuO[sub 4] system, one is in the [ital quasi[minus]one[minus]dimensional] regime of quasiparticle scattering, discussed recently by Altshuler, Balatsky, and Rosengren, for impurity concentrations in excess of [similar to]0.16% whereas Ya-Ba-Cu-O[sub 7] appears likely to be in the true two-dimensional scattering regime for Zn concentrations less than 1.6%. We show the neutron-scattering results of Mason [ital et] [ital al]. [Phys. Rev. Lett. 71, 919 (1993)] on La[sub 1.85]Sr[sub 0.14]CuO[sub 4] provide strong evidence for dirty [ital d]-wave'' superconductivity in their samples. We obtain simple expressions for the dynamic spin susceptibility and [sup 63]Cu spin-lattice relaxation time, [sup 63][ital T][sub 1], in the superconducting state.

• OSTI ID: 7041709
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 50:1; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HIGH-TC SUPERCONDUCTORS
DEFECTS
CUPRATES
D WAVES
NEUTRON DIFFRACTION
QUASI PARTICLES
SPIN-LATTICE RELAXATION
VACANCIES
ZINC
COHERENT SCATTERING
COPPER COMPOUNDS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DIFFRACTION
ELEMENTS
METALS
OXYGEN COMPOUNDS
PARTIAL WAVES
POINT DEFECTS
RELAXATION
SCATTERING
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
665411* - Basic Superconductivity Studies- (1992-)