Interactions between extended and localized states in superlattices

F. Agulla-Rueda, E. E. Mendez, H. Ohno, J. M. Hong

研究成果: Article査読

40 被引用数 (Scopus)

抄録

We have observed electric-field-induced interactions between the extended states of a (40) -(15) GaAs-Ga0.65Al0.35As superlattice and the localized state of an 80- terminating GaAs well. At fields such that the energy of an extended state was close to that of the localized level, low-temperature (5-K) photocurrent spectra associated with interband transitions exhibited three pronounced doublets of peaks with characteristic resonant and anticrossing behavior. As the two levels approach each other, the initially asymmetrical peak intensities first become of comparable strengths and then exchange their roles in the resulting asymmetrical peak intensities as the states begin to repel each other. A comparison of the experimental results with numerical solutions of Schrödingers equation showed that the doublets result from the interaction of the localized state with the three superlattice states of highest energy, centered aroung its last three wells.

本文言語English
ページ(範囲)1470-1473
ページ数4
ジャーナルPhysical Review B
42
2
DOI
出版ステータスPublished - 1990 1月 1
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学

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