Phase-diagram of the Z(3) Spin Model In 3 Dimensions

Fernandez, L. A.; Marini Bettolo Marconi, Umberto; Tarancon, A.

doi:10.1016/0370-2693(89)90873-3

We use a variational method to study the phase structure of the three-dimensional Z ( 3 ) spin model with nearest neighbour and next nearest couplings. The system shows a rich phase diagram. The order and location of the corresponding phase transitions in the ferromagnetic region is compared with a Monte Carlo analysis and found in good agreement with the analytical prediction. We have also found that a region where the phase transition is second order does exist.

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Titolo:	Phase-diagram of the Z(3) Spin Model In 3 Dimensions
Autori:	L. A. FERNANDEZ MARINI BETTOLO MARCONI, Umberto A. TARANCON mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	1989
Rivista:	PHYSICS LETTERS. SECTION B
Abstract:	We use a variational method to study the phase structure of the three-dimensional Z ( 3 ) spin model with nearest neighbour and next nearest couplings. The system shows a rich phase diagram. The order and location of the corresponding phase transitions in the ferromagnetic region is compared with a Monte Carlo analysis and found in good agreement with the analytical prediction. We have also found that a region where the phase transition is second order does exist.
Handle:	http://hdl.handle.net/11581/241990
Appare nelle tipologie:	Articolo

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