Electron-Density Fluctuation in a Mott Transition Induced by an External Electric Field

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概要

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• An addition spectral analysis on a finite cluster from the double-layered lattice model, whichhas been introduced to describe quantum dot arrays under an external electric field perpendicularto the array, is presented. When the density of electrons is near to quarter-filled, we found a newtype of Mott transition, in which the rnetal-insulator transition goes through a heavy-electronphase. In this new Mott transition, the Mott insulating state becomes unstable because Gibbsstates having more pairs of electrons are favored as well as the Mott insulating state, resultingin an enhancement of electron-density fluctuation.

• 社団法人日本物理学会の論文
• 1996-12-15

著者

• Ugajin Ryuichi

  Sony Corporation Research Center

関連論文

• Off-Resonance Effect on Electron Tunneling through a Hubbard Gap
• Electron-Density Fluctuation in a Mott Transition Induced by an External Electric Field
• Transition of Absorption Spectra due to Electron-Electron Interaction in a Square-Well Quantum Dot under a Magnetic Field
• Optical Transitions of Interacting Electrons in Coupled Quantum Dots Modulated by an External Electric Field

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