Department of Physics Papers

Document Type

Journal Article

Date of this Version

4-15-1988

Publication Source

Journal of Applied Physics

Volume

63

Issue

8

Start Page

3083

Last Page

3085

DOI

10.1063/1.340904

Abstract

The ground‐state energy of a spin‐density wave of wave vector Q in a Heisenberg ferromagnet with competing interactions is calculated for small Q as E G (Q)=E G (0)+A 1 Q 2 +A 2 Q 4+ . . . . The coefficients A 1 and A 2 are calculated exactly at zero temperature in the limit as the ferromagnet to helix transition is approached. For some ranges of parameters we find that quantum zero point motion causes A 2 to become negative thus leading to a first‐order transition not present in the classical system.

Copyright/Permission Statement

Reprinted with permission from the Journal of Applied Physics. Copyright 1988, American Institute of Physics.

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Date Posted: 12 August 2015

This document has been peer reviewed.