Spins in the Vortices of a High-Temperature Superconductor-Reference-Cited by-同舟云学术

Spins in the Vortices of a High-Temperature Superconductor

Published:2001-03-02 Issue:5509 Volume:291 Page:1759-1762
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Lake B.¹,Aeppli G.²³,Clausen K. N.³,McMorrow D. F.³,Lefmann K.³,Hussey N. E.⁴⁵,Mangkorntong N.⁴,Nohara M.⁴,Takagi H.⁴,Mason T. E.¹,Schröder A.⁶

Affiliation:

1. Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.

2. N.E.C. Research, 4 Independence Way, Princeton, NJ 08540, USA.

3. Department of Condensed Matter Physics and Chemistry, Risø National Laboratory, 4000 Roskilde, Denmark.

4. Department of Advanced Material Science, Graduate School of Frontier Sciences, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan.

5. Department of Physics, University of Loughborough, Loughborough, LE11 3TU, UK.

6. Physikalisches Institute, University of Karlsruhe, D-76128 Karlsruhe, Germany.

Abstract

Neutron scattering is used to characterize 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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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