SPECIFIC-HEAT ANOMALY IN BCE SOLID HE-3

Citation
H. Kambara et al., SPECIFIC-HEAT ANOMALY IN BCE SOLID HE-3, Journal of low temperature physics, 113(5-6), 1998, pp. 729-734
Citations number
8
Categorie Soggetti
Physics, Applied
ISSN journal
00222291
Volume
113
Issue
5-6
Year of publication
1998
Pages
729 - 734
Database
ISI
SICI code
0022-2291(1998)113:5-6<729:SAIBSH>2.0.ZU;2-Q
Abstract
We have studied the origin of the excess specific heat (anomaly) above 10 mK in bce solid He-3 near melting pressure. We applied strong magn etic fields to the sample to see whether the anomaly arises from spin polarons due to vacancies. The specific heat is the same before and af ter applying magnetic fields of 10-12 T. This result possibly indicate s that the anomaly arises from the origin different from vacancies. Ne st, in order to check whether the anomaly comes from the surface magne tism, we measured the specific heat by coating the surface of sintered silver with three layers and two layers of He-4. The results showed t hat unexpected large heat capacity due to phase separation of solid He -3-He-4 surpassed and smeared the original specific heat anomaly. We a re investigating the origin of the anomaly further.