Na4Ir3O8 as a 3D spin liquid with fermionic spinons

Spin liquid states for the spin-1/2 antiferromagnetic Heisenberg model on a hyperkagome lattice are studied. We classify and study flux states according to symmetries. Applying this model to Na4Ir3O8, we propose that the high temperature state may be described by a spinon Fermi surface, which forms...

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Bibliographic Details
Published in:Physical review letters 2008-11, Vol.101 (19), p.197201-197201
Main Authors: Zhou, Yi, Lee, Patrick A, Ng, Tai-Kai, Zhang, Fu-Chun
Format: Article
Language:English
Online Access:Get full text
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Summary:Spin liquid states for the spin-1/2 antiferromagnetic Heisenberg model on a hyperkagome lattice are studied. We classify and study flux states according to symmetries. Applying this model to Na4Ir3O8, we propose that the high temperature state may be described by a spinon Fermi surface, which forms a paired state with line nodes below 20 K. The possible mixed spin singlet and spin triplet pairing states are discussed according to the lattice symmetry which breaks inversion.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.101.197201