Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2010-08-02
Physics
Condensed Matter
Statistical Mechanics
Scientific paper
We show that in suitable anisotropic ferromagnets, both stable and metastable ``tilted'' phases occur, in which the magnetization ${\vec M}$ makes an angle between zero and $180$ degrees with the externally applied ${\vec H}$. Tuning either the magnitude of the external field or the temperature can lead to continuous transitions between these states. A unique feature is that one of these transitions is between two {\it metastable} states. Near the transitions the longitudinal susceptibility becomes anomalous with an exponent which has an {\it exact} scaling relation with the critical exponents.
Chen Leiming
Toner John
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