Andreev reflection of a beam of ballistic quasiparticle excitations incident of a static B-A phase interface in superfluid {sup 3}He

Journal Article · Sun Oct 01 00:00:00 EDT 1995 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/BF00754591· OSTI ID:198184

Cousins, D J; Enrico, M P; Guenault, A M ^[1]

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1. Lancaster Univ. (United Kingdom); and others

We have attempted to observe the Andreev reflection of a beam of ballistic quasiparticle excitations as it impinges on a static B-A phase interface. The beam is created, and the Andreev reflected component measured, by the quasiparticle equivalent of a black-body radiator. The A-phase is stabilized at low temperature and pressure by a magnetic field which is generated by a miniature superconducting solenoid, situated next to the radiator orifice and which provides the necessary 0.34 T field in a small, localized region. Preliminary results indicate that we can observe Andreev reflection both from the high-field distorted B-phase energy gap and iron the larger equatorial A-phase energy gap.

• Sponsoring Organization: USDOE
• OSTI ID: 198184
• Report Number(s): CONF-950676-; ISSN 0022-2291; TRN: 96:000731-0033
• Journal Information: Journal of Low Temperature Physics, Vol. 101, Issue 1-2; Conference: Symposium on quantum fluids and solids, Ithaca, NY (United States), 12-17 Jun 1995; Other Information: PBD: Oct 1995
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
HELIUM 3 B
EXCITATION
HELIUM 3 A
SUPERFLUIDITY
MAGNETIC FIELDS
REFLECTION
QUASI PARTICLES