Na4Ir3O8 as a 3D spin liquid with fermionic spinons

Details Na4Ir3O8 as a 3D spin liquid with fermionic spinons Na4Ir3O8 as a 3D spin liquid with fermionic spinons

2008-06-20

arxiv.org/abs/0806.3323v2

Phys. Rev. Lett. 101, 197201 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

final version

Scientific paper

10.1103/PhysRevLett.101.197201

Spin liquid states for 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.

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