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Low temperature magnetization of pure3He films on grafoil

โœ Scribed by Hiroshi Fukuyama; P. Schiffer; M.T. O'Keefe; D.D. Osheroff

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
169 KB
Volume
194-196
Category
Article
ISSN
0921-4526

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โœฆ Synopsis

Continuous wave NMR was used to study pure 3He films at coverages from below 2nd layer completion to above the ferromagnetic peak coverage at -2.5 layers. The films were adsorbed on Grafoil and were cooled to temperatures as low as 0.075 mK. The first layer magnetization followed Curie law very well, with a Weiss constant of less than 0.01 mK. We measured the ferromagnetic 2rid layer magnetization to temperatures far below the exchange energy (J) as a function of coverage. Preliminary analysis indicates that J did not vary strongly with coverage, and that the zero temperature 2nd layer magnetization was linear in 2nd layer density. Both of these properties are consistent with there being two phases in coexistence, only one of which is ferromagnetic.

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