Phase diagram of sup 3 He- sup 4 He mixture films

Journal Article · Wed Aug 01 04:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.42.2075· OSTI ID:6366720

Tiwari, R; Glaberson, W I ^[1]

---

1. Serin Physics Laboratory, Rutgers University, Piscataway, NJ (USA)

Superfluid density and dissipation have been measured as functions of temperature in {sup 3}He-{sup 4}He mixture films using a high-{ital Q} torsional oscillator. Transition temperatures between 1.3 and 1.9 K and {sup 3}He concentrations between 0.5% and 56% were investigated. In these films the superfluid transition temperature decreases monotonically with {sup 3}He concentration. This decrease is linear for smaller concentrations but becomes more rapid at higher concentrations. There were no clear signs of a transition to a phase-separated state observed. All the mixture films exhibit the characteristic universal jump in superfluid density at the transition. The results are compared with the bulk phase diagram and also with a simple phenomenological model.

• OSTI ID: 6366720
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:4; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DENSITY
DIAGRAMS
DISPERSIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FILMS
FLUIDS
HELIUM 3
HELIUM 4
HELIUM II
HELIUM ISOTOPES
ISOTOPES
LAMBDA POINT
LIGHT NUCLEI
MATHEMATICAL MODELS
MIXTURES
NUCLEI
PHASE DIAGRAMS
PHYSICAL PROPERTIES
QUANTUM FLUIDS
STABLE ISOTOPES
SUPERFLUIDITY
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE