Bottom-loading dilution refrigerator with ultra-high vacuum deposition capability

Details Bottom-loading dilution refrigerator with ultra-high vacuum deposition capability Bottom-loading dilution refrigerator with ultra-high vacuum deposition capability

2001-08-20

arxiv.org/abs/cond-mat/0108317v2

Physics

Condensed Matter

Superconductivity

10 pages text, 1figure

Scientific paper

10.1063/1.1425778

A Kelvinox 400 dilution refrigerator with the ability to load samples onto the mixing chamber from the bottom of the cryostat has been combined with an ultrahigh-vacuum (UHV) deposition chamber equipped with molecular beam sources. The liquid helium cooled sample transfer mechanism is used in a manner that allows films to be grown on substrates which are kept at temperatures of order 8K with chamber pressures in the 10^-9 to 10^-10 Torr range. This system facilitates the growth of quench-condensed ultrathin films which must always be kept below ~ 12K in a UHV environment during and after growth. Measurements can be made on the films down to millikelvin temperatures and in magnetic fields up to 15 T.

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