Spin-Orbital Liquid on a Triangular Lattice

• Authors: A. Oleś , J. Chaloupka
• Languages of publication: EN

Abstracts

EN

Using Lanczos exact diagonalization of finite clusters we demonstrate that the spin-orbital d^1 model for triply degenerate t_{2g} 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.

Keywords

EN

75.10.Kt; 03.65.Ud; 64.70.Tg; 75.10.Jm

Discipline

• 03.65.Ud: Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.)(for entanglement production and manipulation, see 03.67.Bg; for entanglement measures, witnesses etc., see 03.67.Mn; for entanglement in Bose-Einstein condensates, see 03.75.Gg)
• 75.10.Kt: Quantum spin liquids, valence bond phases and related phenomena
• 64.70.Tg: Quantum phase transitions(for quantum Hall effects aspects, see 73.43.Nq in electronic structure of surfaces, interfaces, thin films, and low dimensional structures)
• 75.10.Jm: Quantized spin models, including quantum spin frustration

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1026-1028

Dates

published

2012-05

Contributors

author

A. Oleś

• Max-Planck-Institut fKF, Heisenbergstraße 1, D-70569 Stuttgart, Germany
• Marian Smoluchowski Institute of Physics, Jagellonian University, W.S. Reymonta 4, PL-30059 Kraków, Poland

author

J. Chaloupka

• Max-Planck-Institut fKF, Heisenbergstraße 1, D-70569 Stuttgart, Germany
• Department of Condensed Matter Physics, Masaryk University, Kotlářská 2, CZ-61137 Brno, Czech Republic

References

• 1. A.M. Oleś, Acta Phys. Pol. A 115, 36 (2009)
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• 14. B. Normand, Phys. Rev. B 83, 064413 (2011)

Identifiers

DOI

10.12693/APhysPolA.121.1026