Tuning a strain-induced orbital selective Mott transition in epitaxialVO2

@article{Mukherjee2016TuningAS,
  title={Tuning a strain-induced orbital selective Mott transition in epitaxialVO2},
  author={Shantanu Mukherjee and Nicholas F. Quackenbush and Hanjong Paik and Christoph Schlueter and T.-L. Lee and Darrell G. Schlom and Louis F. J. Piper and Wei-Cheng Lee},
  journal={Physical Review B},
  year={2016},
  volume={93}
}
We present evidence of strain-induced modulation of electron correlation effects and increased orbital anisotropy in the rutile phase of epitaxial VO$_2$/TiO$_2$ films from hard x-ray photoelectron spectroscopy and soft V L-edge x-ray absorption spectroscopy, respectively. By using the U(1) slave spin formalism, we further argue that the observed anisotropic correlation effects can be understood by a model of orbital selective Mott transition at a filling that is non-integer, but close to the… 

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