Time- and Spectrally Resolved THz Photoconductivity in Quantum Hall Devices

C Stellmach,Y B Vasilyev,G Nachtwei,A Hirsch,N G Kalugin,R Bonk,G Hein,C R Becker

doi:10.1007/978-3-540-36588-4_21

Time- and Spectrally Resolved THz Photoconductivity in Quantum Hall Devices

C Stellmach, Y B Vasilyev + Show 6 more

https://doi.org/10.1007/978-3-540-36588-4_21

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Publication Date: Jan 1, 2006

Citations: 1

Affiliation: Technische Universität Braunschweig, Physikalisch-Technische Bundesanstalt, University of Würzburg

#Quantum Hall Devices #Quantum Hall Systems + Show 8 more

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Abstract

The Terahertz photoconductivity is measured on GaAs/AlGaAs quantum Hall systems. Time resolved investigations show relaxation times form 10 to over 200ns and a dependence on the sample mobility and source-drain voltage. The latter is explained with a heating effect. In addition, spectrally resolved measurements are discussed. The spectral resolution is a function on the sample mobility. Finally, similar measurements on a HgTe/HgCdTe quantum well are presented. All results are important in respect to a possible THz detector application.

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