Spins in the Vortices of a High Temperature Superconductor

Preprint

19 January 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0201347

Abstract

Neutron scattering is used to characterise the magnetism of the vortices for the optimally doped high-temperature superconductor La(2-x)Sr(x)CuO(4) (x=0.163) in an applied magnetic field. As temperature is reduced, low frequency spin fluctuations first disappear with the loss of vortex mobility, but then reappear. We find that the vortex state can be regarded as an inhomogeneous mixture of a superconducting spin fluid and a material containing a nearly ordered antiferromagnet. These experiments show that as for many other properties of cuprate superconductors, the important underlying microscopic forces are magnetic.

Keywords

HIGH TEMPERATURE SUPERCONDUCTOR
TEMPERATURE SUPERCONDUCTOR
SUPERCONDUCTOR NEUTRON
NEUTRON SCATTERING
SUPERCONDUCTORS
SUPERCONDUCTING
ANTIFERROMAGNET
SCATTERING
MOBILITY

All Related Versions

Version 1, 2002-01-19, ArXiv
Published version: Science, 291 (5509), 1759.

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