On the Critical Behaviour and Phase Diagram of Ising-like Metamagnet in a Transverse Field
K. Lukierska-Walasek
Institute of Physics, Pedagogical University of Zielona Góra, Pl. Słowiański 6, 65-065 Zielona Góra, Poland
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The quantum Ising-like metamagnet in a field Γ perpendicular to the easy direction in the mean field approximation is investigated. The conditions for the existence of critical and tricritical points have been analyzed. The result is illustrated by an appropriate plot in three-dimensional space of the following parameters: the temperature, Γ, and field parallel to the easy direction.
DOI: 10.12693/APhysPolA.85.381
PACS numbers: 75.30.Kz, 81.30.Dz, 05.70.Fh