Octupolar order in the multiple spin exchange model on a triangular lattice.
We show how a gapless spin liquid with hidden octupolar order arises in an applied magnetic field, in a model applicable to thin films of 3He with competing ferromagnetic and antiferromagnetic (cyclic) exchange interactions. Evidence is also presented for nematic--i.e., quadrupolar--correlations bordering on ferromagnetism in the absence of a magnetic field.
Momoi
Tsutomu
T
Condensed Matter Theory Laboratory, RIKEN, Wako, Saitama 351-0198, Japan.
Sindzingre
Philippe
P
Shannon
Nic
N