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Helium-3 refrigerator based very low temperature scanning tunneling microscope (STM).

Author(s) : PAN S. H., HUDSON E. W., DAVIS J. C.

Type of article: Article

Summary

The authors describe the design and development of a STM which can operate at temperatures down to 240 mK and in magnetic fields up to 7 T with high spatial and energy resolution. The compact and rigid STM head is mounted directly on a low vibration, single shot, helium-3 refrigerator. This refrigerator can be operated at its base temperature continuously for several days before the helium-3 needs to be recondensed. The system is equipped with a sample transport manipulator from room temperature, and a cleavage device at low temperature, so that the cryogenic ultrahigh vacuum condition inside the cryostat can be utilized. A superconducting magnet provides a magnetic field of up to 7 T at the sample along the STM tip direction.

Details

  • Original title: Helium-3 refrigerator based very low temperature scanning tunneling microscope (STM).
  • Record ID : 2000-1685
  • Languages: English
  • Source: Rev. sci. Instrum. - vol. 70 - n. 2
  • Publication date: 1999/02
  • Document available for consultation in the library of the IIR headquarters only.

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