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Probing phase coherence in solid helium using torsional oscillators of different path lengths.
- Source :
-
Physical Review D: Particles, Fields, Gravitation & Cosmology . Jan2012, Vol. 85 Issue 2, p1-5. 5p. - Publication Year :
- 2012
-
Abstract
- Long-range phase coherence is a critical signature of macroscopic quantum phenomena. To date, nonclassical rotational inertia (NCRI) of solid helium has been reported only in samples with physical dimension of at most 5 cm. We have investigated solid helium in longer path-length torsional oscillators. Samples of length ranging from 6 to 100 cm were grown inside toroids and in self-connected long capillaries. NCRI of 4 x 10-5 and 3 x 10-5 were found in cells with path length of 6 and 9 cm. In cells with path length of 30 and 100 cm, NCRI, if it exists, is less than 7 x 10-5 and 4 x 10-5, respectively. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 24700010
- Volume :
- 85
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Physical Review D: Particles, Fields, Gravitation & Cosmology
- Publication Type :
- Periodical
- Accession number :
- 73957626
- Full Text :
- https://doi.org/10.1103/PhysRevB.85.024533