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research article
Low-noise magnetic-flux sensors based on the extraordinary magnetoresistance effect
We report noise measurements on Au–InAs hybrid structures involving a high-mobility two-dimensional electron system. Such structures show the extraordinary magnetoresistance (EMR) effect. We find excellent noise performance at room temperature close to the Johnson noise, which is in particular important for a technical application. At 4.2 K and in a magnetic field of about 1 T the nonoptimized EMR device is found to exhibit a low magnetic fluxnoise, offering the perspective of sensor applications also in a high magnetic field and at cryogenic temperature.
Type
research article
Authors
MöLler, C. H.
•
Kronenwerth, O.
•
Heyn, Ch.
•
Grundler, D.
Publication date
2004
Publisher
Published in
Volume
84
Issue
17
Article Number
3343
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
July 8, 2015
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