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-Tc materials. / Andersen, Brian Møller; Graser, S.; Schmid, M.; Kampf, A. F. ; Hirschfeld, P.J.
In: Journal of Physics and Chemistry of Solids, Vol. 72, No. 5, 01.05.2011, p. 358-361.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
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 (mSR) 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 (mSR) experiments.
U2 - 10.1016/j.jpcs.2010.10.025
DO - 10.1016/j.jpcs.2010.10.025
M3 - Journal article
VL - 72
SP - 358
EP - 361
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
SN - 0022-3697
IS - 5
ER -
ID: 33464849