Orbital-Driven Electronic Structure Changes and the Resulting Optical Anisotropy of the Quasi-Two-Dimensional Spin Gap Compound La4Ru2O10

S. J. Moon; W. S. Choi; S. J. Kim; Y. S. Lee; P. G. Khalifah; D. Mandrus; T. W. Noh

doi:10.1103/PhysRevLett.100.116404

Orbital-Driven Electronic Structure Changes and the Resulting Optical Anisotropy of the Quasi-Two-Dimensional Spin Gap Compound La4Ru2O10

Strongly Correlated Electrons 2009-11-13 v1

Authors: S. J. Moon , W. S. Choi , S. J. Kim , Y. S. Lee , P. G. Khalifah , D. Mandrus , T. W. Noh

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Abstract

We investigated the electronic response of the quasi-two-dimensional spin gap compound La4Ru2O10 using optical spectroscopy. We observed drastic changes in the optical spectra as the temperature decreased, resulting in anisotropy in the electronic structure of the spin-singlet ground state. Using the orbital-dependent hopping analysis, we found that orbital ordering plays a crucial role in forming the spin gap state in the non-one-dimensional material.

Keywords

orbital ordering electronic structure optical anisotropy spin gap La4Ru2O10 optical spectroscopy

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@article{arxiv.0707.1564,
  title  = {Orbital-Driven Electronic Structure Changes and the Resulting Optical Anisotropy of the Quasi-Two-Dimensional Spin Gap Compound La4Ru2O10},
  author = {S. J. Moon and W. S. Choi and S. J. Kim and Y. S. Lee and P. G. Khalifah and D. Mandrus and T. W. Noh},
  journal= {arXiv preprint arXiv:0707.1564},
  year   = {2009}
}

Orbital-Driven Electronic Structure Changes and the Resulting Optical Anisotropy of the Quasi-Two-Dimensional Spin Gap Compound La4Ru2O10

Abstract

Keywords

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