Nanoscale imaging of the electronic and structural transitions in vanadium dioxide

M. M. Qazilbash; A. Tripathi; A. A. Schafgans; Bong-Jun Kim; Hyun-Tak Kim; Zhonghou Cai; M. V. Holt; J. M. Maser; F. Keilmann; O. G. Shpyrko; D. N. Basov

doi:10.1103/PhysRevB.83.165108

Nanoscale imaging of the electronic and structural transitions in vanadium dioxide

Strongly Correlated Electrons 2015-05-30 v1 Mesoscale and Nanoscale Physics Materials Science

Authors: M. M. Qazilbash , A. Tripathi , A. A. Schafgans , Bong-Jun Kim , Hyun-Tak Kim , Zhonghou Cai , M. V. Holt , J. M. Maser , F. Keilmann , O. G. Shpyrko , D. N. Basov

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Abstract

We investigate the electronic and structural changes at the nanoscale in vanadium dioxide (VO2) in the vicinity of its thermally driven phase transition. Both electronic and structural changes exhibit phase coexistence leading to percolation. In addition, we observe a dichotomy between the local electronic and structural transitions. Nanoscale x-ray diffraction reveals local, non-monotonic switching of the lattice structure, a phenomenon that is not seen in the electronic insulator-to-metal transition mapped by near-field infrared microscopy.

Keywords

vanadium dioxide phase transition nanoscale imaging electronic transition structural transition percolation x-ray diffraction near-field infrared microscopy

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@article{arxiv.1109.3347,
  title  = {Nanoscale imaging of the electronic and structural transitions in vanadium dioxide},
  author = {M. M. Qazilbash and A. Tripathi and A. A. Schafgans and Bong-Jun Kim and Hyun-Tak Kim and Zhonghou Cai and M. V. Holt and J. M. Maser and F. Keilmann and O. G. Shpyrko and D. N. Basov},
  journal= {arXiv preprint arXiv:1109.3347},
  year   = {2015}
}

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23 pages including 7 figures

Nanoscale imaging of the electronic and structural transitions in vanadium dioxide

Abstract

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