Observation of Tamm states in superlattices

Tamm states are intentionally introduced in AlGaAs/GaAs superlattices by a terminating layer of AlAs. Formation of these states is manifested by excitonic interband transitions in photoluminescence excitation spectra. Photocurrent experiments under an electric field show additional transitions as we...

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Veröffentlicht in:	Physical review letters 1990-05, Vol.64 (21), p.2555-2558
Hauptverfasser:	OHNO, H, MENDEZ, E. E, BRUM, J. A, HONG, J. M, AGULLO-RUEDA, F, CHANG, L. L, ESAKI, L
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Exact sciences and technology Physics Surface and interface electron states
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