Observation of Tamm states in superlattices

H. Ohno; E. E. Mendez; J. A. Brum; J. M. Hong; F. Agullã-Rueda; L. L. Chang; L. Esaki

doi:10.1103/PhysRevLett.64.2555

Observation of Tamm states in superlattices

H. Ohno
, E. E. Mendez
, J. A. Brum
, J. M. Hong
, F. Agullã-Rueda
, L. L. Chang
, L. Esaki

Physics and Astronomy

Stony Brook University

IBM

Research output: Contribution to journal › Article › peer-review

184 Scopus citations

Abstract

We have observed localized surface states (Tamm states) intentionally introduced in AlGaAs/GaAs superlattices by a terminating layer of AlAs. The formation of these states is manifested by excitonic interband transitions in photoluminescence excitation spectra. Critical confirmation is provided by photocurrent experiments under an electric field that show additional transitions as well as anticrossing interactions between the Tamm states and the Stark-ladder states associated with the superlattice.

Original language	English
Pages (from-to)	2555-2558
Number of pages	4
Journal	Physical Review Letters
Volume	64
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.64.2555
State	Published - 1990

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title = "Observation of Tamm states in superlattices",

abstract = "We have observed localized surface states (Tamm states) intentionally introduced in AlGaAs/GaAs superlattices by a terminating layer of AlAs. The formation of these states is manifested by excitonic interband transitions in photoluminescence excitation spectra. Critical confirmation is provided by photocurrent experiments under an electric field that show additional transitions as well as anticrossing interactions between the Tamm states and the Stark-ladder states associated with the superlattice.",

author = "H. Ohno and Mendez, \{E. E.\} and Brum, \{J. A.\} and Hong, \{J. M.\} and F. Agull{\~a}-Rueda and Chang, \{L. L.\} and L. Esaki",

year = "1990",

doi = "10.1103/PhysRevLett.64.2555",

language = "English",

volume = "64",

pages = "2555--2558",

journal = "Physical Review Letters",

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T1 - Observation of Tamm states in superlattices

AU - Ohno, H.

AU - Mendez, E. E.

AU - Brum, J. A.

AU - Hong, J. M.

AU - Agullã-Rueda, F.

AU - Chang, L. L.

AU - Esaki, L.

PY - 1990

Y1 - 1990

N2 - We have observed localized surface states (Tamm states) intentionally introduced in AlGaAs/GaAs superlattices by a terminating layer of AlAs. The formation of these states is manifested by excitonic interband transitions in photoluminescence excitation spectra. Critical confirmation is provided by photocurrent experiments under an electric field that show additional transitions as well as anticrossing interactions between the Tamm states and the Stark-ladder states associated with the superlattice.

AB - We have observed localized surface states (Tamm states) intentionally introduced in AlGaAs/GaAs superlattices by a terminating layer of AlAs. The formation of these states is manifested by excitonic interband transitions in photoluminescence excitation spectra. Critical confirmation is provided by photocurrent experiments under an electric field that show additional transitions as well as anticrossing interactions between the Tamm states and the Stark-ladder states associated with the superlattice.

UR - https://www.scopus.com/pages/publications/0348031138

U2 - 10.1103/PhysRevLett.64.2555

DO - 10.1103/PhysRevLett.64.2555

M3 - Article

SN - 0031-9007

VL - 64

SP - 2555

EP - 2558

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

ER -

Observation of Tamm states in superlattices

Abstract

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