Paramagnetism-Ferromagnetism Phase Transition in a Dyonic Black Hole

Abstract

Coupling an antisymmetric tensor field to the electromagnetic field in a dyonic Reissner-Nordström-AdS black hole background, we build a holographic model for the paramagnetism/ferromagnetism phase transition. In the case of zero magnetic field, the time reversal symmetry is broken spontaneously and spontaneous magnetization happens in low temperature. The critical exponents are in agreement with the ones from mean field theory. In the case of nonzero magnetic field, the model realizes the hysteresis loop of single magnetic domain and the magnetic susceptibility satisfies the Curie-Weiss law.

To appear in PRD as a rapid communication

References in corpus (4)

• Building an AdS/CFT superconductor
• A Non-Fermi Liquid from a Charged Black Hole; A Critical Fermi Ball
• A Holographic Superconductor in an External Magnetic Field
• Holographic SIS Josephson Junction

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• Dynamical evolution of a vector field perturbation coupling to Einstein tensor
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• Radially Excited AdS${}_5$ Black Holes in Einstein--Maxwell--Chern--Simons Theory
• Gravitational realization of magnons in a ferromagnetic spin chain