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arXiv · 0707.1564

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
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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.

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S. J. Moon, W. S. Choi, S. J. Kim, Y. S. Lee, P. G. Khalifah, D. Mandrus, T. W. Noh. 2007-07-11. Orbital-Driven Electronic Structure Changes and the Resulting Optical Anisotropy of the Quasi-Two-Dimensional Spin Gap Compound La4Ru2O10. https://doi.org/10.1103/physrevlett.100.116404

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