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Electron correlations in a double-quantum-well structure

Journal Article


Abstract


  • The electron correlation effect in a double-quantum-well structure is investigated. The local-field correction and static structural factors are calculated for these structures. It is found that the static structural factors show an anomalous behavior at small q due to the coupled quantum-well-plasma excitation and the interlayer structural factor is negative at large q. We also found that the long-wavelength acoustic plasma mode is further softened due to short-range electron correlations. The minimum critical well separation for this mode to exist increases by an amount ∼1/kf1, where kf1 is the Fermi wave vector of the well with higher electron concentration. © 1994 The American Physical Society.

Publication Date


  • 1994

Citation


  • Zhang, C. (1994). Electron correlations in a double-quantum-well structure. Physical Review B, 49(4), 2939-2942. doi:10.1103/PhysRevB.49.2939

Scopus Eid


  • 2-s2.0-0013031445

Start Page


  • 2939

End Page


  • 2942

Volume


  • 49

Issue


  • 4

Abstract


  • The electron correlation effect in a double-quantum-well structure is investigated. The local-field correction and static structural factors are calculated for these structures. It is found that the static structural factors show an anomalous behavior at small q due to the coupled quantum-well-plasma excitation and the interlayer structural factor is negative at large q. We also found that the long-wavelength acoustic plasma mode is further softened due to short-range electron correlations. The minimum critical well separation for this mode to exist increases by an amount ∼1/kf1, where kf1 is the Fermi wave vector of the well with higher electron concentration. © 1994 The American Physical Society.

Publication Date


  • 1994

Citation


  • Zhang, C. (1994). Electron correlations in a double-quantum-well structure. Physical Review B, 49(4), 2939-2942. doi:10.1103/PhysRevB.49.2939

Scopus Eid


  • 2-s2.0-0013031445

Start Page


  • 2939

End Page


  • 2942

Volume


  • 49

Issue


  • 4