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Title of the item:

Interband and intersubband absorption in HgCdTe multiple quantum wells

Title :
Interband and intersubband absorption in HgCdTe multiple quantum wells
Authors :
de Paula, AM
de Oliveira, CRM
Marques, GE
Cohen, AM
Feldman, RD
Austin, RF
Islam, MN
Cesar, CL
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Subject Terms :
Photoresponse Measurement
Mu-m
Nonparabolicity
Superlattices
Transitions
Source :
Repositório Institucional da Unicamp
Universidade Estadual de Campinas
Publisher :
EUA, 1999.
Publication Year :
1999
Language :
English
DOI :
10.1103/PhysRevB.59.10158
Accession Number :
edsair.od......3056..dd86ebea932bf2ff8b9f175677a2b8b0
Made available in DSpace on 2014-12-02T16:24:52Z (GMT). No. of bitstreams: 1 WOS000079958900090.pdf: 167770 bytes, checksum: 5f64e92f71d607ab682e3f523fdf13f6 (MD5) Previous issue date: 1999 Made available in DSpace on 2015-11-26T16:11:17Z (GMT). No. of bitstreams: 2 WOS000079958900090.pdf: 167770 bytes, checksum: 5f64e92f71d607ab682e3f523fdf13f6 (MD5) WOS000079958900090.pdf.txt: 30509 bytes, checksum: 6ab663d33cdb42569768e3a89d93837d (MD5) Previous issue date: 1999 We present calculated and experimental interband and photoinduced intersubband absorption spectra for undoped HgCdTe multiple quantum wells. The results show that there is an enhancement of the interband absorption at energies close to the barrier energy for electrons. The calculated interband absorption, based on a full 8X8 k.p Kane model to obtain the electronic structure, predicts that this absorption enhancement is caused by an increase in the electron-hole joint density of stares due to band mixing for confined and continuous electron states. The photoinduced electron intersubband absorption presents an asymmetric line shape due to the nonparabolic bands. The calculated spectra reproduce well the experimental results. [S0163-1829(99)04215-0]. 59 15 10158 10164

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