Exact treatment of magnetism-driven ferroelectricity in the one-dimensional compass model

We consider a class of one-dimensional compass models with antisymmetric Dzyaloshinskii-Moriya exchange interaction in an external magnetic field. Based on the exact solution derived by means of Jordan-Wigner transformation, we study the excitation gap, spin correlations, ground-state degeneracy, an...

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Veröffentlicht in:	Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2014-09, Vol.90 (9), Article 094413
Hauptverfasser:	You, Wen-Long, Liu, Guang-Hua, Horsch, Peter, Oleś, Andrzej M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter Entropy Excitation Ferromagnetism Ground state Magnetic fields Mathematical analysis Polarization
Online-Zugang:	Volltext
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