Observation of a new resonance in the collective-mode spectrum of /sup 3/He-A

Journal Article · Mon Jan 31 04:00:00 EST 1983 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.50.361· OSTI ID:6049128

Meisel, M W; Shivaram, B S; Sarma, B K; Ketterson, J B; Halperin, W P

A high-resolution acoustic impedance technique has been used to investigate the collective mode spectrum of /sup 3/He-A near T/sub c/. A new collective mode of the order parameter has been observed. The temperature at which the new mode appears is frequency, pressure, and magnetic field independent. The observed temperature dependence is very close to the predicted behavior of the super-flapping mode in the weak-coupling limit of the Anderson-Brinkman-Morel energy gap.

• Research Organization: Department of Physics and Astronomy and Materials Research Center, Northwestern University, Evanston, Illinois 60201
• OSTI ID: 6049128
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 50:5; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COLLECTIVE EXCITATIONS
CRITICAL TEMPERATURE
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
EXCITATION
HELIUM 3
HELIUM 3 A
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
NUCLEI
ORDER PARAMETERS
PHYSICAL PROPERTIES
RESOLUTION
SPECTRA
STABLE ISOTOPES
SUPERFLUIDITY
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE