Chiral states in the frustrated kagome antiferromagnet with competing interactions

F. A. GÓMEZ ALBARRACÍN; P. PUJOL

San Carlos de Bariloche

Conferencia; SLAFES XXIII; XXIII Latin American Symposium on Solid State Physics; 2018

IUPAP

(poster) In the last few years, numerous studies have proposed the emergence of chiral spin liquid states and topologically protected phases in the kagome antiferromagnet with additional interactions. In this work, we present an exhaustive study of the low temperature phases of the classical kagome extended Heisenberg model in highly frustrated   regimes. We first present an isotropic model including up to third nearest neighbours, where we find highly degenerate ground states in the boundaries of classically chiral phases. Then, we focus on the effect of additional Zeeman coupling and antisymmetric Dzyaloshinskii-Moriya (DM) interactions. We find a rich phase diagram, including regions with different chiral phases and broken symmetries.