Path integral approach to order by disorder selection in partially polarized quantum spin systems

In this paper we study the frustrated J 1 − J 2 quantum Heisenberg model on the square lattice for J 2 > J 1 /2, in a magnetic field. In this regime the classical system is known to have a degenerate manifold of lowest energy configurations, where standard thermal order by disorder occurs. In ord...

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Veröffentlicht in:	The European physical journal. B, Condensed matter physics Condensed matter physics, 2015-07, Vol.88 (7), p.176, Article 176
Hauptverfasser:	Lamas, Carlos Alberto, Cabra, Daniel C., Pujol, Pierre, Rossini, Gerardo L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Analysis Complex Systems Condensed Matter Physics Fluid- and Aerodynamics Magnetic fields Magnetization Physics Physics and Astronomy Regular Article Solid State Physics
Online-Zugang:	Volltext
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