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

Brian Møller Andersen; Markus Schmid; Siegfried   Graser; P. J. Hirschfeld; Arno P. Kampf

doi:10.1002/chin.201113235

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

Brian Møller Andersen, Markus Schmid, Siegfried Graser, P. J. Hirschfeld, Arno P. Kampf

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	ChemInform
Volume	42
Issue number	13
ISSN	0931-7597
DOIs	https://doi.org/10.1002/chin.201113235
Publication status	Published - May 2011

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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 - Schmid, Markus

AU - Graser, Siegfried

AU - Hirschfeld, P. J.

AU - Kampf, Arno P.

PY - 2011/5

Y1 - 2011/5

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 - 10.1002/chin.201113235

DO - 10.1002/chin.201113235

M3 - Journal article

SN - 0931-7597

VL - 42

JO - ChemInform (Print)

JF - ChemInform (Print)

IS - 13

ER -

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

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