Date of this Version
Journal of Applied Physics
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.
Reprinted with permission from the Journal of Applied Physics. Copyright 1988, American Institute of Physics.
Harris, A., & Rastelli, E. (1988). First‐Order Phase Transition Induced by Quantum Fluctuations in Heisenberg Helimagnets. Journal of Applied Physics, 63 (8), 3083-3085. http://dx.doi.org/10.1063/1.340904
Date Posted: 12 August 2015
This document has been peer reviewed.