Title: High-performance InAs quantum well based Corbino magnetoresistive sensors on germanium substrates
Authors: Behet, M
De Boeck, J
Mijlemans, P
Borghs, Gustaaf #
Issue Date: Mar-1999
Publisher: Japan j applied physics
Series Title: Japanese journal of applied physics part 1-regular papers short notes & review papers vol:38 issue:3A pages:1310-1313
Abstract: High-quality InAs/Al0.2Ga0.8Sb quantum well structures were grown on Germanium substrates by molecular beam epitaxy (MBE). Electron mobilities of 27,000 cm(2)/Vs for sheet concentrations of n(s) = 1.8 x 10(12) cm(-2) were routinely achieved at room temperature for undoped InAs/Al0.2Ca0.8Sb quantum well structures on Germanium substrates. We developed a simple processing technology for the fabrication of Corbino magnetoresistive devices. Excellent current sensitivities;bf 195 Ohm/T and voltage sensitivities of 2.35 T-1 at a magnetic field of 0.15 T were measured for Corbino shaped magnetoresistors on Germanium substrate at room temperature. This sensing performance is comparable to that obtained by identical sensors on GaAs substrate.
ISSN: 0021-4922
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physics and Astronomy - miscellaneous
# (joint) last author

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