Nearly Singular Magnetic Fluctuations in the Normal State of a High- T c Cuprate Superconductor-Reference-Cited by-同舟云学术

Nearly Singular Magnetic Fluctuations in the Normal State of a High- T c Cuprate Superconductor

Published:1997-11-21 Issue:5342 Volume:278 Page:1432-1435
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Aeppli G.¹²³⁴⁵,Mason T. E.¹²³⁴⁵,Hayden S. M.¹²³⁴⁵,Mook H. A.¹²³⁴⁵,Kulda J.¹²³⁴⁵

Affiliation:

1. G. Aeppli, NEC Research Institute, 4 Independence Way, Princeton, NJ 08540, USA, and Risø National Laboratory, 4000 Roskilde, Denmark.

2. T. E. Mason, Department of Physics, University of Toronto, Toronto, Canada, M5S 1A7 and Risø National Laboratory, 4000 Roskilde, Denmark.

3. S. M. Hayden, Department of Physics, University of Bristol, Bristol BS8 1TL, UK.

4. H. A. Mook, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.

5. J. Kulda, Institut Laue-Langevin, BP 156X, Grenoble Cedex, France.

Abstract

Polarized and unpolarized neutron scattering was used to measure the wave vector– and frequency-dependent magnetic fluctuations in the normal state (from the superconducting transition temperature, T c = 35 kelvin, up to 350 kelvin) of single crystals of La 1.86 Sr 0.14 CuO 4 . The peaks that dominate the fluctuations have amplitudes that decrease as T −2 and widths that increase in proportion to the thermal energy, k B T (where k B is Boltzmann's constant), and energy transfer added in quadrature. The nearly singular fluctuations are consistent with a nearby quantum critical point.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference31 articles.

1. B. Batlogg et al. Electronic Properties of High- T c Superconductors (Springer Berlin 1993) p. 5.

2. Slakey F., et al., Phys. Rev. B 43, 3764 (1991);

3. Schlesinger Z., et al., Phys. Rev. Lett. 65, 801 (1990).

4. Chien T. R., et al., Phys. Rev. Lett. 67, 2088 (1991).

5. Varma C. M., et al., ibid. 63, 1996 (1989).

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