Superfluid density in the presence of persistent current in superfluid /sup 4/He

Journal Article · Fri Oct 01 04:00:00 EDT 1976 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00654829· OSTI ID:7331985

Kojima, H ^[1]; Veith, W; Guyon, E; Rudnick, I

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1. Rutgers-The State Univ., New Brunswick, NJ

The superfluid density rho/sub s/ in the presence of persistent current (v/sub n/ -- v/sub s/ is not equal to 0 is investigated using the Doppler-shifted fourth-sound technique. In the vortex-free Landau state, rho/sub s/ remains constant within our experimental resolution of two parts in 10/sup 5/. This is not inconsistent with a theoretical prediction by Khalatnikov. Where vortices are present outside the Landau region, a fractional change in p/sub s/ becomes as large as 1.2 percent, depending on rotation velocity and temperature, and shows a relatively complex hysteresis behavior.

• OSTI ID: 7331985
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 25:1/2; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CURRENTS
DENSITY
EVEN-EVEN NUCLEI
FLUID FLOW
FOURTH SOUND
HELIUM 4
HELIUM II
HELIUM ISOTOPES
HYSTERESIS
ISOTOPES
LIGHT NUCLEI
MOTION
NUCLEI
PHYSICAL PROPERTIES
ROTATION
STABLE ISOTOPES
VORTEX FLOW