Evidence of {sup {bold 4}}He Crystallization via Quantum Tunneling at mK Temperatures
Journal Article
·
· Physical Review Letters
- Low Temperature Laboratory, Helsinki University of Technology, Otakaari 3A, FIN-02150 Espoo (Finland)
We have investigated creation of {sup 4}He crystals from the superfluid phase at the temperature range 2mK{endash}1.0K. Statistical nucleation-event distributions in overpressure were found to be broad, asymmetric, and temperature independent below 100mK. Our statistical analysis agrees with a theoretical model suggesting that solid formation is driven by macroscopical quantum-mechanical fluctuations from a seed preexisting in a cavity on the wall. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 383893
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 12 Vol. 77; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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