PL EN


Preferences help
enabled [disable] Abstract
Number of results
2012 | 121 | 2 | 372-374
Article title

Interplay between Correlated Electrons and Quantum Phonons in Charge-Ordered and Mott-Insulating Organic Compounds

Content
Title variants
Languages of publication
EN
Abstracts
EN
At an early stage of the photoinduced transition from an insulator to a metal in quasi-two-dimensional organic conductors, a coherent motion of electrons is observed in a charge-ordered insulator, but not so far in a Mott insulator. The mechanisms of these different photoinduced charge dynamics are theoretically studied by numerical solutions to the time-dependent Schrödinger equation for exact many-electron-phonon wave functions on small clusters of model systems. We use two-dimensional three-quarter-filled extended Holstein-Hubbard models on anisotropic triangular lattices. For a charge-ordered insulator on a lattice simplified from the structure of α-(BEDT-TTF)_2I_3, we indeed find a low-energy collective electronic motion coupled with quantum phonons even if the energy of photoexcitation is away from this energy. For a Mott insulator on a lattice simplified from the structure of κ-(BEDT-TTF)_2X, however, such a collective motion does not appear, and quantum phonons are hardly excited.
Keywords
Year
Volume
121
Issue
2
Pages
372-374
Physical description
Dates
published
2012-02
References
  • [1] K. Yonemitsu, K. Nasu, Phys. Rep. 465, 1 (2008)
  • [2] N. Maeshima, K. Hino, K. Yonemitsu, Phys. Rev. B 82, 161105 (2010)
  • [3] Y. Kawakami, T. Fukatsu, Y. Sakurai, H. Unno, H. Itoh, S. Iwai, T. Sasaki, K. Yamamoto, K. Yakushi, K. Yonemitsu, Phys. Rev. Lett. 105, 246402 (2010)
  • [4] T. Takahashi, Y. Nogami, K. Yakushi, J. Phys. Soc. Jpn. 75, 051008 (2006)
  • [5] K. Kanoda, J. Phys. Soc. Jpn. 75, 051007 (2006)
  • [6] Y. Kawakami, S. Iwai, T. Fukatsu, M. Miura, N. Yoneyama, T. Sasaki, N. Kobayashi, Phys. Rev. Lett. 103, 066403 (2009)
  • [7] Y. Tanaka, K. Yonemitsu, J. Phys. Soc. Jpn. 79, 024712 (2010)
  • [8] S. Miyashita, Y. Tanaka, S. Iwai, K. Yonemitsu, J. Phys. Soc. Jpn. 79, 034708 (2010)
  • [9] K. Yonemitsu, S. Miyashita, N. Maeshima, J. Phys. Soc. Jpn. 80, 084710 (2011)
  • [10] T. Mori, H. Mori, S. Tanaka, Bull. Chem. Soc. Jpn. 72, 179 (1999)
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv121n218kz
Identifiers
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.