Low-temperature analysis of the ANNNI model in an external magnetic field: Cascades of phase transitions,complete devil's staircases
Authors:
G. Uimin
Affiliation:
(1) L. D. Landau Institute for Theoretical Physics, ul. Kosygina 2, 117940 Moscow, USSR
Abstract:
The behavior of the axial next-nearest-neighbor Ising (ANNNI) model in an external magnetic field is investigated using a low-temperature expansion of the free energy. Unusual cascades of phase transitions and complete devil's staircases, unexpected for the ANNNI model, are found.