Nanoscale imaging of the electronic and structural transitions in vanadium dioxide

Details Nanoscale imaging of the electronic and structural transitions in vanadium dioxide Nanoscale imaging of the electronic and structural transitions in vanadium dioxide

2011-09-12

arxiv.org/abs/1109.3347v1

Physical Review B 83, 165108 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

23 pages including 7 figures

Scientific paper

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.

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