Browsing by Author "Vidas, Luciana"

Now showing items 1-3 of 3

    • Imaging Nanometer Phase Coexistence at Defects During the Insulator−Metal Phase Transformation in VO2 Thin Films by Resonant Soft X‑ray Holography 

      Vidas, Luciana; Günther, Christian M.; Miller, Timothy A.; Pfau, Bastian; Perez-Salinas, Daniel; Martínez, Elías; Schneider, Michael; Guehers, Erik; Gargiani, Pierluigi; Valvidares, Manuel; Marvel, Robert E.; Hallman, Kent A.; Haglund, Richard F.; Eisebitt, Stefan; Wall, Simon (ACS, 2018-05-16)
      Article
      Open Access
      We use resonant soft X-ray holography to image the insulator−metal phase transition in vanadium dioxide with element and polarization specificity and nanometer spatial resolution. We observe that nanoscale inhomogeneity ...

    • The insulator-metal phase transition in VO2 measured at nanometer length scales and femtosecond time scales 

      Vidas, Luciana (Universitat Politècnica de Catalunya, 2019-05-02)
      Doctoral thesis
      Open Access
      The physics of transition-metal oxides presents a challenge to our current understanding of condensed matter physics. The main difficulty arises from a competition between electron-electron and electron-phonon interactions ...

    • Ultrafast disordering of vanadium dimers in photoexcited VO2 

      Wall, Simon; Yang, Shan; Vidas, Luciana; Chollet, Matthieu; Glownia, Michael; Kozina, Michael; Katayama, Tetsuo; Henighan, Thomas; Jiang, Mason; Miller, Timothy A.; Reis, David A.; Boatner, Lynn A.; Delaire, Olivier; Trigo, Mariano (American Association for the Advancement of Science., 2018-11-02)
      Article
      Open Access
      Time-resolved x-ray scattering can be used to investigate the dynamics of materials during the switch from one structural phase to another. So far, methods provide an ensemble average and may miss crucial aspects of the ...