Static and dynamic spin fluctuations in superconducting <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">La</mi></mrow><mrow><mn>2</mn><mo>−</mo><mi>x</mi></mrow></msub></mrow><mrow><msub><mrow><mi mathvariant="normal">Sr</mi></mrow><mrow><mi>x</mi></mrow></msub></mrow><mi mathvariant="normal">Cu</mi><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>4</mn></mrow></msub></mrow></math></span>

R. J. Birgeneau; Y. Endoh; K. Kakurai; Y. Hidaka; T. Murakami; M. A. Kastner; T. R. Thurston; G. Shirane; K. Yamada

doi:10.1103/PhysRevB.39.2868

Rapid Communication

Static and dynamic spin fluctuations in superconducting ${La}_{2 - x} {Sr}_{x} Cu O_{4}$

R. J. Birgeneau, Y. Endoh, K. Kakurai, Y. Hidaka, T. Murakami, M. A. Kastner, T. R. Thurston, G. Shirane, and K. Yamada

Phys. Rev. B 39, 2868(R) – Published 1 February 1989

Abstract

We report a neutron scattering study of the spin fluctuations in samples of ${La}_{1.89}$ ${Sr}_{0.11}$ Cu $O_{4}$ which are ∼80% superconducting with $T_{c} = 10$ K. The structure factor $S (Q)$ reflects three-dimensional modulated spin correlations with an in-plane correlation length of order 18±6 Å. The fluctuations evolve with temperature from being predominantly dynamic at high temperatures to mainly quasielastic ( $| Δ E | < 0.5$ meV) at low temperatures. No significant differences are observed in the normal and superconducting states.

Received 31 August 1988

DOI:https://doi.org/10.1103/PhysRevB.39.2868

Authors & Affiliations

R. J. Birgeneau

Physics Department, Brookhaven National Laboratory, Upton, New York 11973 and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

Y. Endoh and K. Kakurai