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Scanning tunneling microscopy and spectroscopy in dilution refrigerators.

Number: pap. ID: 127

Author(s) : SUDEROW H., GUILLAMNON I., MALDONADO A., et al.

Summary

Scanning Probe Microscopy (SPM) below 1 K offers important surface characterization possibilities in, e.g. quantum nanostructures in semiconductors, or in superconductors. At present only few scanning probe microscopes which can be operated in this temperature range have been reported. Those adapted to dilution refrigerators are interesting, because this technology is unique in providing a cold point stable in time that can cool down large devices to temperatures which are one or two orders of magnitude below 1 K. The environment of dilution refrigeration is, however, rather inadequate for SPM, due to the vibrations usually associated to operation of such devices, especially in Scanning Tunneling Microscopes, where the mechanical stability requirements are very stringent. Here we will present details of successful designs which we have used to be able to make STM experiments from 100 mK on and under magnetic fields of up to 9 T.

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Pages: 8 p.

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Details

  • Original title: Scanning tunneling microscopy and spectroscopy in dilution refrigerators.
  • Record ID : 30001569
  • Languages: English
  • Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Publication date: 2011/08/21

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