Critical current of 3He-A in narrow channels

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
1982
Major/Subject
Mcode
Degree programme
Language
en
Pages
5233-5236
Series
Physical Review B, Volume 26, Issue 9
Abstract
The critical current Jc of superfluid 3He-A in 0.8-μm-diam channels has been measured by the observation of the pressure difference along the channels versus the mass current. During warming Jc was found to decrease by about 30% at TBA(cyl) and by another 30% at TBA; TBA(cyl) is the reduced B→A transition temperature in the narrow flow channels, with TBA(cyl)TBA=0.92 at 27.4 bars. Above TBA a second dissipative mechanism was observed at lower currents. These features are believed to be associated with the ends of the channels.
Description
Keywords
superfluids, currents, narrow channels
Other note
Citation
Manninen, M. T. & Pekola, Jukka & Sharma, R. G. & Tagirov, M. S. 1982. Critical current of 3He-A in narrow channels. Physical Review B. Volume 26, Issue 9. 5233-5236. ISSN 1098-0121 (printed). DOI: 10.1103/physrevb.26.5233.