Delocalization of Polaron of the Extended Peierls-Hubbard System in the Mott Phase

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概要

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• One-dimensional strongly correlated electron system, which is accompanied by interaction with the lattice, has attracted a great deal of interest in both experimental and theoretical studies. At half-filling, this system is a Mott insulator when the electron-lattice interaction is weak. We performed a theoretical investigation of the stable ground state of the one-dimensional strongly correlated electron system with electron-lattice interaction in which one electron is doped from half-filling. We used an extended Peierls-Hubbard model. We report here that, contrary to "common sense" suppositions about the one-dimensional electron-lattice system, a polaron solution appears under conditions of comparatively strong electron-lattice interaction in the Mott phase and that the polaron delocalizes under conditions of weak electron-lattice interaction. These two states are separated by the strength of the electron-lattice interaction.

• 社団法人日本物理学会の論文
• 2003-11-15

著者

• Iwano Kaoru

  Kek-imss

• SHIRASAKI Ryoen

  Department of Physics, Yokohama National University

• Shirasaki R

  Department Of Physics Yokohama National University

• Shirasaki Ryoen

  Department Of Physics Faculty Of Education Yokohama National University

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