Effects of impurities and vortices on the low-energy spin excitations in high-Tc materials

Brian Møller Andersen; S. Graser; M. Schmid; A. F.  Kampf; P.J. Hirschfeld

doi:10.1016/j.jpcs.2010.10.025

Effects of impurities and vortices on the low-energy spin excitations in high-T_c materials

Brian Møller Andersen, S. Graser, M. Schmid, A. F. Kampf, P.J. Hirschfeld

9 Citations (Scopus)

Abstract

We review a theoretical scenario for the origin of the spin-glass phase of underdoped cuprate materials. In particular it is shown how disorder in a correlated d-wave superconductor generates a magnetic phase by inducing local droplets of antiferromagnetic order which eventually merge and form a quasi-long range ordered state. When correlations are sufficiently strong, disorder is unimportant for the generation of static magnetism but plays an additional role of pinning disordered stripe configurations. We calculate the spin excitations in a disordered spin-density wave phase, and show how disorder and/or applied magnetic fields lead to a slowing down of the dynamical spin fluctuations in agreement with neutron scattering and muon spin rotation (μSR) experiments.

Original language	English
Journal	Journal of Physics and Chemistry of Solids
Volume	72
Issue number	5
Pages (from-to)	358-361
Number of pages	3
ISSN	0022-3697
DOIs	https://doi.org/10.1016/j.jpcs.2010.10.025
Publication status	Published - 1 May 2011

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10.1016/j.jpcs.2010.10.025

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title = "Effects of impurities and vortices on the low-energy spin excitations in high-Tc materials",

abstract = "We review a theoretical scenario for the origin of the spin-glass phase of underdoped cuprate materials. In particular it is shown how disorder in a correlated d-wave superconductor generates a magnetic phase by inducing local droplets of antiferromagnetic order which eventually merge and form a quasi-long range ordered state. When correlations are sufficiently strong, disorder is unimportant for the generation of static magnetism but plays an additional role of pinning disordered stripe configurations. We calculate the spin excitations in a disordered spin-density wave phase, and show how disorder and/or applied magnetic fields lead to a slowing down of the dynamical spin fluctuations in agreement with neutron scattering and muon spin rotation (μSR) experiments.",

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T1 - Effects of impurities and vortices on the low-energy spin excitations in high-Tc materials

AU - Andersen, Brian Møller

AU - Graser, S.

AU - Schmid, M.

AU - Kampf, A. F.

AU - Hirschfeld, P.J.

PY - 2011/5/1

Y1 - 2011/5/1

N2 - We review a theoretical scenario for the origin of the spin-glass phase of underdoped cuprate materials. In particular it is shown how disorder in a correlated d-wave superconductor generates a magnetic phase by inducing local droplets of antiferromagnetic order which eventually merge and form a quasi-long range ordered state. When correlations are sufficiently strong, disorder is unimportant for the generation of static magnetism but plays an additional role of pinning disordered stripe configurations. We calculate the spin excitations in a disordered spin-density wave phase, and show how disorder and/or applied magnetic fields lead to a slowing down of the dynamical spin fluctuations in agreement with neutron scattering and muon spin rotation (μSR) experiments.

AB - We review a theoretical scenario for the origin of the spin-glass phase of underdoped cuprate materials. In particular it is shown how disorder in a correlated d-wave superconductor generates a magnetic phase by inducing local droplets of antiferromagnetic order which eventually merge and form a quasi-long range ordered state. When correlations are sufficiently strong, disorder is unimportant for the generation of static magnetism but plays an additional role of pinning disordered stripe configurations. We calculate the spin excitations in a disordered spin-density wave phase, and show how disorder and/or applied magnetic fields lead to a slowing down of the dynamical spin fluctuations in agreement with neutron scattering and muon spin rotation (μSR) experiments.

U2 - 10.1016/j.jpcs.2010.10.025

DO - 10.1016/j.jpcs.2010.10.025

M3 - Journal article

SN - 0022-3697

VL - 72

SP - 358

EP - 361

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 5

ER -

Effects of impurities and vortices on the low-energy spin excitations in high-Tc materials

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Effects of impurities and vortices on the low-energy spin excitations in high-T_c materials