Susceptibility of a Heisenberg antiferromagnet

B. K. Agarwal and Narendra Singh
Phys. Rev. B 30, 1523 – Published 1 August 1984
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Abstract

The spin-wave Hamiltonian for the two-sublattice Heisenberg antiferromagnet is obtained with the use of a Maleev transformation. The dipole-dipole interaction is restricted to nearest neighbors. The double-time Green-function formulation is used to obtain the expression, up to first order, of the 16 elementary two-operator Green functions. These are used to obtain the frequency-dependent susceptibility.

  • Received 12 December 1983

DOI:https://doi.org/10.1103/PhysRevB.30.1523

©1984 American Physical Society

Authors & Affiliations

B. K. Agarwal*

  • International Centre for Theoretical Physics, International Atomic Energy Agency and United Nations Educational, Scientific and Cultural Organization, Trieste, Italy

Narendra Singh

  • Physics Department, Allahabad University, Allahabad 211002, Uttar Pradesh, India

  • *Permanent address: X-ray Laboratory, Physics Department, Allahabad University, Allahabad 211002, Uttar Pradesh, India

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Vol. 30, Iss. 3 — 1 August 1984

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