Surface specific heat of 3He and Andreev bound states

Phys Rev Lett. 2006 Mar 31;96(12):125301. doi: 10.1103/PhysRevLett.96.125301. Epub 2006 Mar 31.

Abstract

High resolution measurements of the specific heat of liquid 3He in the presence of a silver surface have been performed at temperatures near the superfluid transition in the pressure range of 1-29 bar. The surface contribution to the heat capacity is identified with Andreev bound states of quasiparticles that have a range of half a coherence length.