Long-Range Order and Low-Energy Spectrum of Diluted 2D Quantum Antiferromagnet

A. L. Chernyshev, Y. C. Chen, and A. H. Castro Neto
Phys. Rev. Lett. 87, 067209 – Published 24 July 2001
PDFExport Citation

Abstract

The problem of a diluted two-dimensional quantum antiferromagnet on a square lattice is studied using spin-wave theory. The influence of impurities on static and dynamic properties is investigated and a good agreement with experiments and Monte Carlo data is found. The hydrodynamic description of spin waves breaks down at characteristic wavelengths Λexp(const/x), x being an impurity concentration, while the order parameter is free from anomalies. We argue that this dichotomy originates from strong scattering of the low-energy excitations in two dimensions.

  • Received 28 August 2000

DOI:https://doi.org/10.1103/PhysRevLett.87.067209

©2001 American Physical Society

Authors & Affiliations

A. L. Chernyshev1,2,*, Y. C. Chen1, and A. H. Castro Neto1

  • 1Department of Physics, University of California, Riverside, California 92521
  • 2Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831

  • *Also at the Institute of Semiconductor Physics, Novosibirsk, Russia.

References (Subscription Required)

Click to Expand
Issue

Vol. 87, Iss. 6 — 6 August 2001

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×