Photoinduced insulator-to-metal transition dynamics in models for quasi-two-dimensional organic conductors

Kenji Yonemitsu, Yasuhiro Tanaka, Satoshi Miyashita, Nobuya Maeshima

Research output: Contribution to journalArticle

Abstract

Photoinduced transition dynamics is studied in extended Peierls-Hubbard models for organic BEDT-TTF salts on anisotropic triangular lattices. For θ- and α-type salts, the lattice distortion pattern in the charge-ordered ground state governs the easiness of the insulator-to-metal transition. For κ-type salts, the energy of photoexcitation in the dimer-Mott phase determines whether the insulator-to-metal transition is controlled by the bandwidth or the band filling.

Original languageEnglish
Pages (from-to)486-490
Number of pages5
JournalPhysica Status Solidi (B) Basic Research
Volume248
Issue number2
DOIs
Publication statusPublished - 2011 Feb 1
Externally publishedYes

Fingerprint

Organic conductors
Transition metals
conductors
Salts
transition metals
insulators
salts
Hubbard model
Photoexcitation
photoexcitation
Crystal lattices
Dimers
Ground state
dimers
bandwidth
Bandwidth
ground state
energy

Keywords

  • Charge order
  • Electron-phonon interaction
  • Mott insulator
  • Photoinduced phase transition

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Photoinduced insulator-to-metal transition dynamics in models for quasi-two-dimensional organic conductors. / Yonemitsu, Kenji; Tanaka, Yasuhiro; Miyashita, Satoshi; Maeshima, Nobuya.

In: Physica Status Solidi (B) Basic Research, Vol. 248, No. 2, 01.02.2011, p. 486-490.

Research output: Contribution to journalArticle

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