Spin-Orbital Liquid on a Triangular Lattice |
| A.M. Oleśa, b and J. Chaloupkaa, c
aMax-Planck-Institut fKF, Heisenbergstraße 1, D-70569 Stuttgart, Germany bMarian Smoluchowski Institute of Physics, Jagellonian University, W.S. Reymonta 4, PL-30059 Kraków, Poland cDepartment of Condensed Matter Physics, Masaryk University, Kotlářská 2, CZ-61137 Brno, Czech Republic |
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| Using Lanczos exact diagonalization of finite clusters we demonstrate that the spin-orbital d1 model for triply degenerate t2g orbitals on a triangular lattice provides an example of a spin-orbital liquid ground state. We also show that the spin-orbital liquid involves entangled valence bond states which violate the Goodenough-Kanamori rules, and modify effective spin exchange constants. |
| DOI: 10.12693/APhysPolA.121.1026 PACS numbers: 75.10.Kt, 03.65.Ud, 64.70.Tg, 75.10.Jm |