Skip to main content
The Phoenix Files
Community Digital Archives of Olin College

Main navigation

  • Home
  • Browse Digital Objects
  • About This Collection

Critical dynamics of a spin-5/2 two-dimensional isotropic antiferromagnet

  1. Home
Pages: 1 of
In Faculty Publications

Title

Critical dynamics of a spin-5/2 two-dimensional isotropic antiferromagnet

Author(s)

Christianson, Rebecca J.
Leheny, R. L.
Birgeneau, R. J.

Description

We report a neutron-scattering study of the dynamic spin correlations in Rb2MnF4, a two-dimensional spin-5/2 antiferromagnet. By tuning an external magnetic field to the value for the spin-flop line, we reduce the effective spin anisotropy to essentially zero, thereby obtaining a nearly ideal two-dimensional isotropic antiferromagnet. From the shape of the quasielastic peak as a function of temperature, we demonstrate dynamic scaling for this system and find a value for the dynamical exponent z. We compare these results to theoretical predictions for the dynamic behavior of the two-dimensional Heisenberg model, in which deviations from z=1 provide a measure of the corrections to scaling.

Date Published

2018-03-26

Files

  • Download Christianson_CriticalDynamics.pdf

Rights Statements

In Copyright - Educational Use Permitted

Linked Data for this Object

Wikidata subjects

User login

  • Reset your password
Olin College of Engineering

An undergraduate engineering institution exploring innovative approaches to engineering education since its founding in 1997.

1000 Olin Way
Needham, MA 02492
781.292.2390