Please use this identifier to cite or link to this item: http://hdl.handle.net/2307/314
Title: Conduction band intersubband transitions in Ge/SiGe quantum wells
Authors: De Seta, Monica
Capellini, Giovanni
Busby, Yan
Evangelisti, Florestano
Ortolani, Michele
Virgilio, Michele
Grosso, Giuseppe
Pizzi, Giovanni
Nucara, Alessandro
Lupi, Stefano
Keywords: cascade emitters
electroluminescence
heterostructures
physics
devices
Issue Date: Aug-2009
Publisher: American Institute of Physics
Abstract: In this letter we present the experimental evidence of intersubbandabsorption in the conduction band of compressively strained germaniumquantum wells bounded by Ge-rich SiGe barriers. The measured absorptionenergies are in the terahertz range and are interpreted by means oftight binding calculations which include self-consistent band-bendingand depolarization effects. From the comparison of experimental andnumerical results a conduction band offset along the L line of about120 meV has been estimated for the studied heterostructures.
URI: http://hdl.handle.net/2307/314
ISSN: 0003-6951
DOI: 10.1063/1.3198204
Appears in Collections:A - Articolo su rivista
X_Dipartimento di Fisica 'Edoardo Amaldi'

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