Pair breaking edge in superfluid ³He

Authors

Shireen Adenwalla, University of Nebraska-LincolnFollow
Z. Zhao, Northwestern University
J. B. Ketterson, Northwestern UniversityFollow
B. K. Sarma, University of Wisconsin - Milwaukee

Date of this Version

1989

Citation

AIP Conference Proceedings 194, 107 (1989); doi: 10.1063/1.38815

Abstract

We present the first direct, systematic measurements of the superfluid energy gap in the B-phase of ³He. We compare our measurements to the predictions of the weak-coupling-plus model. The comparison depends on the temperature scale used; however weak-coupling theory does not provide an accurate description for either temperature scale. We find the best agreement occurs if we use a combination of the Greywall temperature scale and the weak-coupling-plus model z for the gap.