MIZOGUCHI, Tomonari; JAUBERT, L.D.C.; UDAGAWA, Masafumi

doi:10.1103/PhysRevLett.119.077207

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MIZOGUCHI, Tomonari
Department of Physics, University of Tokyo, Bunkyo, Tokyo

JAUBERT, L.D.C.
Okinawa Institute of Science and Technology
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

UDAGAWA, Masafumi
Department of Physics [Tokyo]

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Physical Review Letters. 2017, vol. 119, p. 077207

American Physical Society

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Fractionalization is a ubiquitous phenomenon in topological states of matter. In this work, we study the collective behavior of fractionalized topological charges and their instabilities, through the J1-J2-J3 Ising model on a kagome lattice. This model can be mapped onto a Hamiltonian of interacting topological charges under the constraint of Gauss’ law. We find that the recombination of topological charges gives rise to a yet unexplored classical spin liquid. This spin liquid is characterized by an extensive residual entropy, as well as the formation of hexamers of same-sign topological charges. The emergence of hexamers is reflected by a half-moon signal in the magnetic structure factor, which provides a signature of this new spin liquid in elastic neutron-scattering experiments. To study this phase, a worm algorithm has been developed which does not require the usual divergence-free condition.< Leer menos

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Clustering of Topological Charges in a Kagome Classical Spin Liquid

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