IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Non-trivial phases and thermal state selection in the highly frustrated honeycomb lattice under a magnetic field
Autor/es:
H. D. ROSALES; F A GÓMEZ ALBARRACÍN; D. C. CABRA
Lugar:
Buenos Aires
Reunión:
Simposio; Frontiers in physical sciences - 2016; 2016
Institución organizadora:
International Center for Advanced Studies
Resumen:
In magnetic systems, frustration between different interactions gives rise to different exotic phenomena like quantum and thermal order by disorder,spin liquids, extensive entropy.Highly frustrated systems are ideal to explore this phases. In this work,some of these phases are found in the classical honeycomb lattice at thisparticular point considering up to third nearest neighbour bonds. Thismodel has recently been considered relevant in connection withhoneycomb-layered iridates, where further neighbour interactions might benecessary to explain the experimental measurements.In the model presented here, the phenomenology at low temperatures dependson the dimension of the spins: Heisenberg spins show a disordered spinliquid-like phase. On the other hand, there is evidence of order bydisorder for XY spins in all the magnetisation curve, showing inparticular two collinear pseudo plateaus and broken symmetries at lowtemperature. We discuss the different low temperature phases andcharacterise them with relevant complex order parameters.
rds']