PEPIN, C.; NORMAN, M. R.; BURDIN, S.; FERRAZ, A.

doi:10.1103/PhysRevLett.106.106601

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PEPIN, C.
Institut de Physique Théorique - UMR CNRS 3681 [IPHT]
International Institute of Physics

NORMAN, M. R.
Materials Science Division

BURDIN, S.
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

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Physical Review Letters. 2011-03-11, vol. 106, n° 10, p. 106601 (4)

American Physical Society

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We argue that near a Kondo breakdown critical point, a spin liquid with spatial modulations can form. Unlike its uniform counterpart, we find that this occurs via a second order phase transition. The amount of entropy quenched when ordering is of the same magnitude as for an antiferromagnet. Moreover, the two states are competitive, and at low temperatures are separated by a first order phase transition. The modulated spin liquid we find breaks $Z_4$ symmetry, as recently seen in the hidden order phase of URu$_2$Si$_2$. Based on this, we suggest that the modulated spin liquid is a viable candidate for this unique phase of matter.< Réduire

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Modulated spin liquid: a new paradigm for URu$_2$Si$_2$

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