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Article Dans Une Revue Physical Review Letters Année : 2010

Spin ice under pressure: symmetry enhancement and infinite order multicriticality

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We study the low-temperature behaviour of spin ice when uniaxial pressure induces a tetragonal distortion. There is a phase transition between a Coulomb liquid and a fully magnetised phase. Unusually, it combines features of discontinuous and continuous transitions: the order parameter exhibits a jump, but this is accompanied by a divergent susceptibility and vanishing domain wall tension. All these aspects can be understood as a consequence of an emergent SU(2) symmetry at the critical point. We map out a possible experimental realisation.
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ensl-00462955 , version 1 (10-03-2010)

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Ludovic D.C. Jaubert, J.T. Chalker, Peter C.W. Holdsworth, R. Moessner. Spin ice under pressure: symmetry enhancement and infinite order multicriticality. Physical Review Letters, 2010, 8 (105), pp.087201. ⟨10.1103/PhysRevLett.105.087201⟩. ⟨ensl-00462955⟩
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