Surface-induced order parameter distortion in topological superfluid 3He-B measured by non-linear NMR

Lev V. Levitin, Robert G. Bennett, Evgeny V. Surovtsev, Jeevak M. Parpia, Brian Cowan, Andrew J. Casey, and John Saunders

Physical Review Letters, 111, 235304-1-5 (2013)