We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Localised surface plasmon resonance inducing cooperative Jahn–Teller effect for crystal phase-change in a nanocrystal.
- Authors
Sakamoto, Masanori; Hada, Masaki; Ota, Wataru; Uesugi, Fumihiko; Sato, Tohru
- Abstract
The Jahn–Teller effect, a phase transition phenomenon involving the spontaneous breakdown of symmetry in molecules and crystals, causes important physical and chemical changes that affect various fields of science. In this study, we discovered that localised surface plasmon resonance (LSPR) induced the cooperative Jahn–Teller effect in covellite CuS nanocrystals (NCs), causing metastable displacive ion movements. Electron diffraction measurements under photo illumination, ultrafast time-resolved electron diffraction analyses, and theoretical calculations of semiconductive plasmonic CuS NCs showed that metastable displacive ion movements due to the LSPR-induced cooperative Jahn–Teller effect delayed the relaxation of LSPR in the microsecond region. Furthermore, the displacive ion movements caused photo-switching of the conductivity in CuS NC films at room temperature (22 °C), such as in transparent variable resistance infrared sensors. This study pushes the limits of plasmonics from tentative control of collective oscillation to metastable crystal structure manipulation. Here the authors demonstrate that semiconductive plasmonic CuS NCs show metastable displacive ion movements due to the cooperative Jahn–Teller effect induced by localised surface plasmon resonance.
- Subjects
JAHN-Teller effect; COOPERATIVE binding (Biochemistry); METASTABLE ions; ELECTRON diffraction; PHASE transitions; CRYSTAL symmetry; SURFACE plasmon resonance
- Publication
Nature Communications, 2023, Vol 14, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-023-40153-9