Browsing by Author "Miller, Timothy A."

Now showing items 1-4 of 4

    • 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 ...

    • Terahertz field control of in-plane orbital order in La0.5Sr1.5MnO4 

      Miller, Timothy A.; Chhajlany, Ravindra W.; Tagliacozzo, Luca; Green, Bertram; Kovalev, Sergey; Prabhakaran, Dharmalingam; Lewenstein, Maciej; Gensch, Michael; Wall, Simon (Nature Publishing Group, 2015-09-18)
      Article
      Open Access
      In-plane anisotropic ground states are ubiquitous in correlated solids such as pnictides, cuprates and manganites. They can arise from doping Mott insulators and compete with phases such as superconductivity; however, their ...

    • Time-domain separation of optical properties from structural transitions in resonantly bonded materials 

      Waldecker, Lutz; Miller, Timothy A.; Rudé, Miquel; Bertoni, Roman; Osmond, Johann; Simpson, Robert E.; Ernstorfer, Ralph; Wall, Simon (Nature Publishing Group, 2015-07-27)
      Article
      Open Access
      The extreme electro-optical contrast between crystalline and amorphous states in phase-change materials is routinely exploited in optical data storage1 and future applications include universal memories2, flexible displays3, ...

    • 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 ...