Physics – Condensed Matter
Scientific paper
1998-06-08
Physics
Condensed Matter
18 pages, 7 figures
Scientific paper
10.1103/PhysRevB.58.5554
Transitions from classical to quantum behaviour in a spin system with two degenerate ground states separated by twin energy barriers which are asymmetric due to an applied magnetic field are investigated. It is shown that these transitions can be interpreted as first- or second-order phase transitions depending on the anisotropy and magnetic parameters defining the system in an effective Lagrangian description.
Lee Young Sam
Mueller-Kirsten Harald J. W.
Park Dae Kil
Zimmerschied Frank
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