Your browser doesn't support javascript.
loading
Collapse of layer dimerization in the photo-induced hidden state of 1T-TaS2.
Stahl, Quirin; Kusch, Maximilian; Heinsch, Florian; Garbarino, Gaston; Kretzschmar, Norman; Hanff, Kerstin; Rossnagel, Kai; Geck, Jochen; Ritschel, Tobias.
Afiliação
  • Stahl Q; Institut für Festkörper- und Materialphysik, Technische Universität Dresden, 01069, Dresden, Germany.
  • Kusch M; Institut für Festkörper- und Materialphysik, Technische Universität Dresden, 01069, Dresden, Germany.
  • Heinsch F; Institut für Festkörper- und Materialphysik, Technische Universität Dresden, 01069, Dresden, Germany.
  • Garbarino G; Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, 01328, Dresden, Germany.
  • Kretzschmar N; ESRF, The European Synchrotron, 38000, Grenoble, France.
  • Hanff K; ESRF, The European Synchrotron, 38000, Grenoble, France.
  • Rossnagel K; Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, 24098, Kiel, Germany.
  • Geck J; Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, 24098, Kiel, Germany.
  • Ritschel T; Ruprecht-Haensel-Labor, Christian-Albrechts-Universität zu Kiel und Deutsches Elektronen-Synchrotron DESY, 24098 Kiel und, 22607, Hamburg, Germany.
Nat Commun ; 11(1): 1247, 2020 Mar 06.
Article em En | MEDLINE | ID: mdl-32144243
Photo-induced switching between collective quantum states of matter is a fascinating rising field with exciting opportunities for novel technologies. Presently, very intensively studied examples in this regard are nanometer-thick single crystals of the layered material 1T-TaS2, where picosecond laser pulses can trigger a fully reversible insulator-to-metal transition (IMT). This IMT is believed to be connected to the switching between metastable collective quantum states, but the microscopic nature of this so-called hidden quantum state remained largely elusive up to now. Here, we characterize the hidden quantum state of 1T-TaS2 by means of state-of-the-art x-ray diffraction and show that the laser-driven IMT involves a marked rearrangement of the charge and orbital order in the direction perpendicular to the TaS2-layers. More specifically, we identify the collapse of interlayer molecular orbital dimers as a key mechanism for this non-thermal collective transition between two truly long-range ordered electronic crystals.

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article