Magnetic exponents of two-dimensional spin glasses

Liers, Frauke and Martin, Olivier C. (2007) Magnetic exponents of two-dimensional spin glasses.
Published in: Physical Review B Vol. 76 (6). 060405.

Abstract

The magnetic critical properties of two-dimensional spin glasses are controversial.Using exact ground state determination, we extract the properties of clusters flipped when increasing continuously a uniform field. We show that these clusters have many holes but otherwise have statistical properties similar to those of zero-field droplets. A detailed analysis gives for the magnetization exponent delta approx 1.30 pm 0.02 using lattice sizes up to 80 imes 80 ; this is compatible with the droplet model prediction delta = 1.282 . The reason for previous disagreements stems from the need to analyze both singular and analytic contributions in the low field regime.


Actions:
Download: [img] Postscript - Preprinted Version
Download (614Kb) | Preview
Export as:
Editorial actions: View Item View Item (Login required)
Deposit Information:
ZAIK Number: zaik2007-539
Depositing User: Frauke Liers
Date Deposited: 19 Apr 2008 00:00
Last Modified: 19 Dec 2011 09:46
URI: http://e-archive.informatik.uni-koeln.de/id/eprint/539