Spin correlations in the 2D Heisenberg antiferromagnet <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Sr</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">CuO</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Cl</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math>: Neutron scattering, Monte Carlo simulation, and theory

M. Greven; R. J. Birgeneau; Y. Endoh; M. A. Kastner; B. Keimer; M. Matsuda; G. Shirane; T. R. Thurston

doi:10.1103/PhysRevLett.72.1096

Spin correlations in the 2D Heisenberg antiferromagnet ${Sr}_{2}$ ${CuO}_{2}$ ${Cl}_{2}$ : Neutron scattering, Monte Carlo simulation, and theory

M. Greven, R. J. Birgeneau, Y. Endoh, M. A. Kastner, B. Keimer, M. Matsuda, G. Shirane, and T. R. Thurston

Phys. Rev. Lett. 72, 1096 – Published 14 February 1994

Abstract

We report a neutron scattering study of the spin correlations in the model 2D, S=1/2, square-lattice Heisenberg antiferromagnetic ${Sr}_{2}$ ${CuO}_{2}$ ${Cl}_{2}$ . The spin correlation lengths obtained agree quantitatively with values deduced from Monte Carlo simulations over a wide range of temperature. The combined data, which cover the length scale from 1 to 200 lattice constants, are predicted accurately with no adjustable parameters by renormalized classical theory for the quantum nonlinear sigma model.

Received 23 July 1993

DOI:https://doi.org/10.1103/PhysRevLett.72.1096

Authors & Affiliations

M. Greven, R. J. Birgeneau, Y. Endoh, M. A. Kastner, B. Keimer, M. Matsuda, G. Shirane, and T. R. Thurston

Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
Department of Physics, Brookhaven National Laboratory, Upton, New York 11973
Department of Physics, Tohoku University, Sendai 980, Japan