We apply the Landau theory of phase transitions to describe the formation of stripes and bubbles in a two dimensional charged system. We show that coupling of the order parameter to the charge density dramatically changes the transition. We discuss the scenario where the order parameter is coupled t
Phase transitions in non-collinear ordering without frustration
β Scribed by D. Loison
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 147 KB
- Volume
- 264
- Category
- Article
- ISSN
- 0375-9601
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β¦ Synopsis
We study a Heisenberg and XY model on a cubic lattice with a cubic exchange coupling having a non-collinear ground state not due to frustration. This model has attractive properties: complex breakdown of symmetry, temperature dependence of the angles between the spins and phase transitions between ordered phases.
π SIMILAR VOLUMES
Interest in Fe(ND 3 ) 2 PO 4 , one of the first three-dimensional structurally linked solids forming Fe-ND 3 bonds, has been renewed recently due to the observation of structural and magnetic phase transitions. This paper reports powder neutron diffraction experiments which show that Fe(ND 3 ) 2 PO