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attoSHPM
attoSHPM
low temperature scanning Hall probe microscope
The attoSHPM is a compact scanning Hall probe microscope,
designed particularly for operation at low temperature and high
magnetic fields. At the heart of the attoSHPM, a molecular beam
epitaxy (MBE) grown GaAs/AlGaAs​Hall sensor measures magnetic
fields with unrivalled sensitivity. Local measurements of the
magnetization of a sample are obtained by scanning the sample
underneath the Hall sensor and simultaneously recording the Hall
voltage, directly yielding the local magnetic field.
While other local probes may outperform the Hall sensor with respect to its lateral resolution, its ability to non-invasively obtain
quantitative values for the local magnetic field makes the Hall
sensor a unique tool for the study of superconductors and magnetic materials. The attoSHPM is available with an optional interferometric encoder for closed loop operation.
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01 LT and HV compatible feedthroughs
02 vacuum window
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03 microscope insert
04 superconducting magnet (optional)
05 attoDRY1100 cryostat (optional)
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06 quick exchange sample holder
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07 xyz scanner
08 xyz coarse positioners
09 ultra stable Titanium housing
Schematic drawing of the low temperature attoSHPM
and the attoDRY1100 cryostat (optional)
10 Hall probe sensor head