Abstract
We have completed a torsional-oscillator study of superfluidity in thin films of $^{4}\mathrm{He}$ adsorbed on the basal plane of graphite for coverages from 11/2 to 7 atomic layers. In contrast to superfluidity in films adsorbed on amorphous substrates, we find several different regimes of superfluid behavior. Superfluidity in the second layer shows an anomalous temperature dependence and is destroyed by solidification of the film. The superfluid film appears to coexist with a two-dimensional surface gas for low coverages in the third layer. Evidence of a phase transition, which may be the reconstruction of an underlying layer, appears just above the completion of the third layer. Modulation of the superfluid signal with coverage is seen through the completion of the sixth layer. \textcopyright{} 1996 The American Physical Society.
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.
