Nanoscale imaging of the electronic and structural transitions in vanadium dioxide

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

doi:10.1103/PhysRevB.83.165108

arXiv 2011-09-12 DOI 10.1103/PhysRevB.83.165108 0 مشاهدة

Nanoscale imaging of the electronic and structural transitions in vanadium dioxide

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

Strongly Correlated Electrons Mesoscale and Nanoscale Physics Materials Science

الأصل · EN

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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