| Issue |
Europhys. Lett.
Volume 74, Number 4, May 2006
|
|
|---|---|---|
| Page(s) | 699 - 705 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2005-10564-5 | |
| Published online | 05 April 2006 | |
Numerical studies of the compressible Ising spin glass
1
The James Franck Institute and Department of Physics, University of Chicago Chicago, IL 60637, USA
2
The Martin Fisher School of Physics, Brandeis University Waltham, MA 02454, USA
Received:
11
November
2005
Accepted:
12
March
2006
We study a two-dimensional compressible Ising spin glass at constant
volume. The spin interactions are coupled to the distance between
neighboring particles in the Edwards-Anderson model with 
interactions. We find that the energy of a given spin configuration is
shifted from its incompressible value, E0, by an amount quadratic in
E0 and proportional to the coupling strength. We then construct a
simple model expressed only in terms of spin variables that predicts the
existence of a critical value of the coupling above which the spin-glass
transition cannot exist.
PACS: 75.10.Nr – Spin-glass and other random models / 75.40.Mg – Numerical simulation studies / 05.50.+q – Lattice theory and statistics (Ising, Potts, etc.)
© EDP Sciences, 2006
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