Abstract
An experimental technique for measuring magnetic fluctuations by means of a double-layer Hall sensor array is described. The technique relies on cross-correlating Hall signals from two independent sensors positioned one above the other in two separate two-dimensional-electron-gas layers of a GaAs/AlGaAs heterostructure. The effectiveness of the technique is demonstrated by a reduction of the magnitude of the background noise floor of the correlated sensors with respect to the noise level of the best single sensor.
Original language | English |
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Pages (from-to) | 359-361 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 78 |
Issue number | 3 |
DOIs | |
State | Published - 15 Jan 2001 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)