Spectral statistics of correlated electrons in a square-well quantum dot

✍ Scribed by Ryuichi Ugajin

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 377 KB
• Volume: 237
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/s0378-4371(96)00381-0

✦ Synopsis

The nature of correlated electrons confined in two dimensions is analyzed using the spectral statistics of three electrons confined in a square-well quantum dot. When in a small quantum dot, the spectral statistics of electrons are similar to those of Poisson distribution. As the quantum dot becomes larger, the spectral statistics approach those of a Gaussian orthogonal ensemble, suggesting quantum chaotic behavior of electrons caused by electron-electron interaction. In a very large quantum dot, phonon modes from the Wigner-lattice ground state have additional effects on the spectral statistics.