Dual Orbital Degeneracy Lifting in a Strongly Correlated Electron System.

@article{Koch2021DualOD,
  title={Dual Orbital Degeneracy Lifting in a Strongly Correlated Electron System.},
  author={Roland J. Koch and Robert Sinclair and Marshall T. McDonnell and Runze Yu and Milinda Abeykoon and Matthew G. Tucker and Alexei M. Tsvelik and Simon J. L. Billinge and H. D. Zhou and W G Yin and E. S. Bozin},
  journal={Physical review letters},
  year={2021},
  volume={126 18},
  pages={
          186402
        }
}
The local structure of NaTiSi_{2}O_{6} is examined across its Ti-dimerization orbital-assisted Peierls transition at 210 K. An atomic pair distribution function approach evidences local symmetry breaking preexisting far above the transition. The analysis unravels that, on warming, the dimers evolve into a short range orbital degeneracy lifted (ODL) state of dual orbital character, persisting up to at least 490 K. The ODL state is correlated over the length scale spanning ∼6 sites of the Ti… Expand
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