Evidence of 4He Crystallization via Quantum Tunneling at mK Temperatures

J. P. Ruutu; P. J. Hakonen; J. S. Penttilä; A. V. Babkin; J. P. Saramäki; E. B. Sonin

doi:10.1103/PhysRevLett.77.2514

Evidence of ⁴He Crystallization via Quantum Tunneling at mK Temperatures

J. P. Ruutu, P. J. Hakonen, J. S. Penttilä, A. V. Babkin, J. P. Saramäki, E. B. Sonin

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Abstract

We have investigated creation of ⁴He crystals from the superfluid phase at the temperature range 2 mK–1.0 K. Statistical nucleation-event distributions in overpressure were found to be broad, asymmetric, and temperature independent below 100 mK. 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.

Original language	English
Pages (from-to)	2514-2517
Number of pages	4
Journal	Physical Review Letters
Volume	77
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.77.2514
State	Published - 1996
Externally published	Yes

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abstract = "We have investigated creation of 4He crystals from the superfluid phase at the temperature range 2 mK–1.0 K. Statistical nucleation-event distributions in overpressure were found to be broad, asymmetric, and temperature independent below 100 mK. 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.",

author = "Ruutu, {J. P.} and Hakonen, {P. J.} and Penttil{\"a}, {J. S.} and Babkin, {A. V.} and Saram{\"a}ki, {J. P.} and Sonin, {E. B.}",

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AU - Saramäki, J. P.

AU - Sonin, E. B.

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AB - We have investigated creation of 4He crystals from the superfluid phase at the temperature range 2 mK–1.0 K. Statistical nucleation-event distributions in overpressure were found to be broad, asymmetric, and temperature independent below 100 mK. 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.

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Evidence of ⁴He Crystallization via Quantum Tunneling at mK Temperatures

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