Ultrafast photoconversion from charge density wave state to Mott-Hubbard state in one-dimensional extended Peierls-Hubbard system of Br-bridged Pd compound

Hiroyuki Matsuzaki, Masahiro Yamashita, Hiroshi Okamoto

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Photoconversion from a charge density wave (CDW) state to a Mott-Hubbard (MH) state in a onedimensional (1D) extended Peierls-Hubbard system is observed by femtosecond (fs) reflection spectroscopy. The Br-bridged Pd compound examined is located near the CDW-MH phase boundary, and the irradiation of a fs laser pulse causes the instantaneous formation of a 1D MH domain without alternation of bridging-Br displacements. This result demonstrates the important role of intersite Coulomb repulsion in the transition, and in the stabilization of the CDW state. The formation of the MH domain is followed by a coherent oscillation with a period of 360 fs attributable to the relaxation of the bridging-Br displacements coupled with the charge-transfer between neighboring Pd ions.

Original languageEnglish
Article number123701
Journaljournal of the physical society of japan
Volume75
Issue number12
DOIs
Publication statusPublished - 2006 Dec 1

Keywords

  • Charge density wave
  • Coherent oscillation
  • Mott-Hubbard
  • Photoinduced phase transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Ultrafast photoconversion from charge density wave state to Mott-Hubbard state in one-dimensional extended Peierls-Hubbard system of Br-bridged Pd compound'. Together they form a unique fingerprint.

  • Cite this