Abstract
The superfluid transition temperature and superfluid density of superfluid 3 He in aerogel are revealed to be largely suppressed with respect to those of bulk liquid. We have studied superfluidity of 3 He in aerogel of nominal porosity of 98.5%, 98.0%, and 97.5% by fourth sound technique. The superfluid transition temperature T C aero has been recognised by sharp change of quality factor of resonating sound. T C aero was suppressed as previous experiments. Unexpectedly we observed the signal from the fourth sound resonator between T C aero and bulk T C. The loss of fourth sound was independent of temperature at the lowest temperature. Such a behaviour is quite different from previous fourth sound experiments without aerogel.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
