A milliKelvin scanning Hall probe microscope for high resolution magnetic imaging

Volodymyr V Khotkevych; Simon J Bending

doi:10.1088/1742-6596/150/1/012021

A milliKelvin scanning Hall probe microscope for high resolution magnetic imaging

Volodymyr V Khotkevych, Simon J Bending

Department of Physics

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173 Downloads (Pure)

Abstract

The design and performance of a novel scanning Hall probe microscope for milliKelvin magnetic imaging with submicron lateral resolution is presented. The microscope head is housed in the vacuum chamber of a commercial He-3-refrigerator and operates between room temperature and 300 mK in magnetic fields up to 10 T. Mapping of the local magnetic induction at the sample surface is performed by a micro-fabricated 2DEG Hall probe equipped with an integrated STM tip. The latter provides a reliable mechanism of surface tracking by sensing and controlling the tunnel currents. We discuss the results of tests of the system and illustrate its potential with images of suitable reference samples captured in different modes of operation.

Original language	English
Article number	012021
Number of pages	4
Journal	Journal of Physics: Conference Series
Volume	150
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/150/1/012021
Publication status	Published - 2009
Event	25th International Conference on Low Temperature Physics - Amsterdam, Netherlands Duration: 6 Aug 2008 → 13 Aug 2008

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10.1088/1742-6596/150/1/012021

Bending_JoPConfSer_2009_150_012021.pdfAccepted author manuscript, 181 KB

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A SCANNING HALL PROBE MICROSCOPE FOR HIGH RESOLUTION MILLIKE LVIN MAGNETIC IMAGING
Bending, S.
Engineering and Physical Sciences Research Council
1/01/06 → 31/12/08
Project: Research council

Cite this

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abstract = "The design and performance of a novel scanning Hall probe microscope for milliKelvin magnetic imaging with submicron lateral resolution is presented. The microscope head is housed in the vacuum chamber of a commercial He-3-refrigerator and operates between room temperature and 300 mK in magnetic fields up to 10 T. Mapping of the local magnetic induction at the sample surface is performed by a micro-fabricated 2DEG Hall probe equipped with an integrated STM tip. The latter provides a reliable mechanism of surface tracking by sensing and controlling the tunnel currents. We discuss the results of tests of the system and illustrate its potential with images of suitable reference samples captured in different modes of operation.",

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A milliKelvin scanning Hall probe microscope for high resolution magnetic imaging

Abstract

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A SCANNING HALL PROBE MICROSCOPE FOR HIGH RESOLUTION MILLIKE LVIN MAGNETIC IMAGING

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