Conduction band intersubband transitions in Ge/SiGe quantum wells

M. De Seta; G. Capellini; Y. Busby; F. Evangelisti; M. Ortolani; M. Virgilio; G. Grosso; G. Pizzi; A. Nucara; S. Lupi

doi:10.1063/1.3198204

Conduction band intersubband transitions in Ge/SiGe quantum wells

M. De Seta, G. Capellini, Y. Busby, F. Evangelisti, M. Ortolani, M. Virgilio, G. Grosso, G. Pizzi, A. Nucara, S. Lupi

Résultats de recherche: Contribution à un journal/une revue › Article › Revue par des pairs

Résumé

In this letter we present the experimental evidence of intersubband absorption in the conduction band of compressively strained germanium quantum wells bounded by Ge-rich SiGe barriers. The measured absorption energies are in the terahertz range and are interpreted by means of tight binding calculations which include self-consistent band-bending and depolarization effects. From the comparison of experimental and numerical results a conduction band offset along the L line of about 120 meV has been estimated for the studied heterostructures.

langue originale	Anglais
Numéro d'article	051918
journal	Applied Physics Letters
Volume	95
Numéro de publication	5
Les DOIs	https://doi.org/10.1063/1.3198204
Etat de la publication	Publié - 2009
Modification externe	Oui

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10.1063/1.3198204

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title = "Conduction band intersubband transitions in Ge/SiGe quantum wells",

abstract = "In this letter we present the experimental evidence of intersubband absorption in the conduction band of compressively strained germanium quantum wells bounded by Ge-rich SiGe barriers. The measured absorption energies are in the terahertz range and are interpreted by means of tight binding calculations which include self-consistent band-bending and depolarization effects. From the comparison of experimental and numerical results a conduction band offset along the L line of about 120 meV has been estimated for the studied heterostructures.",

author = "{De Seta}, M. and G. Capellini and Y. Busby and F. Evangelisti and M. Ortolani and M. Virgilio and G. Grosso and G. Pizzi and A. Nucara and S. Lupi",

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T1 - Conduction band intersubband transitions in Ge/SiGe quantum wells

AU - De Seta, M.

AU - Capellini, G.

AU - Busby, Y.

AU - Evangelisti, F.

AU - Ortolani, M.

AU - Virgilio, M.

AU - Grosso, G.

AU - Pizzi, G.

AU - Nucara, A.

AU - Lupi, S.

PY - 2009

Y1 - 2009

N2 - In this letter we present the experimental evidence of intersubband absorption in the conduction band of compressively strained germanium quantum wells bounded by Ge-rich SiGe barriers. The measured absorption energies are in the terahertz range and are interpreted by means of tight binding calculations which include self-consistent band-bending and depolarization effects. From the comparison of experimental and numerical results a conduction band offset along the L line of about 120 meV has been estimated for the studied heterostructures.

AB - In this letter we present the experimental evidence of intersubband absorption in the conduction band of compressively strained germanium quantum wells bounded by Ge-rich SiGe barriers. The measured absorption energies are in the terahertz range and are interpreted by means of tight binding calculations which include self-consistent band-bending and depolarization effects. From the comparison of experimental and numerical results a conduction band offset along the L line of about 120 meV has been estimated for the studied heterostructures.

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U2 - 10.1063/1.3198204

DO - 10.1063/1.3198204

M3 - Article

AN - SCOPUS:68349160640

SN - 0003-6951

VL - 95

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 5

M1 - 051918

ER -

Conduction band intersubband transitions in Ge/SiGe quantum wells

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