New measurements of parallel ringing in a quasi-ideal geometry for 3He-B near the temperature and pressure of the polycritical point suggest fB2/fA2∼5/2, where fB and fA are the linear parallel-ringing frequencies at a given temperature near Tc. This result approaches the prediction of theory using the Anderson-Brinkman-Morel and Balian-Werthamer states to describe 3He-A and 3He-B, respectively, and hence the results of Osheroff at melting pressure, but disagrees with earlier observations at pressures near the polycritical point.
Published in Physical Review Letters, ed. Gene D. Sprouse, Volume 35, Issue 9, 1975, pages 615-617.
Webb, R. A., Sager, R. E., & Wheatley, J. C. (1975). Relationship between the linear frequencies in 3He-A and 3He-B near the polycritical point. Physical Review Letters, 35(9), 615-617. DOI: 10.1103/PhysRevLett.35.615
© Physical Review Letters, 1975, American Physical Society