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Exictation spectrum and thermodynamic properties of the Ising-Heisenberg linear ferromagnet

Journal Article · · Phys. Rev. Lett.; (United States)
New analytic results are presented for the low-T thermodynamics of the Ising-Heisenberg linear ferromagnetic in a magnetic field H/sub 0/. For small H/sub 0/ the thermodyanmic functions show unexpected and interesting structure as a function of H/sub 0/ and the anisotropy ..delta... The thermal and magnetic energy gaps have singularities, not necessarily at the same ..delta..-H/sub 0/ location, as changes occur in the type of excitation dominating the low-T behavior. The results may relate to quantum solitons in the linear ferromagnet.
Research Organization:
Theoretical Division, Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87545
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
5478943
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 44:9; ISSN PRLTA
Country of Publication:
United States
Language:
English