Static and dynamic spins in superconducting La2-xSrxCuO4: The Riso years

One important area of modern condensed matter research is the investigation of the nature of the superconducting cuprates. Much progress in this field has been obtained with the technique of neutron scattering. We here present a review of neutron scattering studies of the high-temperature superconductor La2-xSrx CuO4, performed at Riso National Laboratory. We review the work on the mapping of the incommensurate spin fluctuations, the investigation of the gap in the fluctuation spectrum, the magnetic properties of the vortices appearing in an applied field, and the quantum critical behaviour of the system. We discuss our findings in the light of results of neutron scattering from other groups, on other cuprate systems, and results from other experimental methods, e.g. NMR, muSR, STM, X-ray diffraction, and ARPES. We end with a discussion on the implications of the experimental results for the progress in the general understanding of high-temperature superconductivity.

Published in:
Journal of Low Temperature Physics, 135, 5-6, 621-664
Riso Natl Lab, Mat Res Dept, DK-4000 Roskilde, Denmark. Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England. Univ Coll London, London Ctr Nanotechnol, London WC1E 6BT, England. Univ Coll London, Dept Phys & Astron, London WC1E 6BT, England. Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. Paul Scherrer Inst, CH-5232 Villigen, Switzerland. Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England. Spallat Neutron Source, Oak Ridge, TN 37830 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Univ Tokyo, Grad Sch Frontier Sci, Tokyo 1138656, Japan. Univ Tokyo, Inst Solid State Phys, Tokyo 1138656, Japan. Lefmann, K, Riso Natl Lab, Mat Res Dept, DK-4000 Roskilde, Denmark.

 Record created 2007-01-24, last modified 2018-01-27

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