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A Microscopic Description of Vacancies in Solid 4 | He

The changes that vacancies produce in the properties of hcp solid4 He are studied by means of quantum Monte Carlo methods. Our results show that the introduction of vacancies produces significant changes in the behavior of solid4 He, even when the vacancy concentration is very small. We show that th... Full description

Main Author: Rota, R.
Contributors: Lutsyshyn, Y. | Author
Cazorla, C. | Author
Boronat, J. | Author
Contained in: Journal of Low Temperature Physics Dordrecht : Springer Science + Business Media B.V Vol. 168, No. 3/4 (2012), p. 150-161
Journal Title: Journal of Low Temperature Physics
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Links: Volltext (dx.doi.org)
ISSN: 1573-7357
Additional Keywords: Bose-Einstein condensation
OriginalPaper
Quantum Monte Carlo
Solid4 He
Superfluidity
Vacancies
DOI: 10.1007/s10909-012-0616-5
Language: English
Physical Description: Online-Ressource
ID (e.g. DOI, URN): 10.1007/s10909-012-0616-5
s10909-012-0616-5
PPN (Catalogue-ID): SPR030957621
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520 |a The changes that vacancies produce in the properties of hcp solid4 He are studied by means of quantum Monte Carlo methods. Our results show that the introduction of vacancies produces significant changes in the behavior of solid4 He, even when the vacancy concentration is very small. We show that there is an onset temperature where the properties of incommensurate4 He change significantly. Below this temperature, we observe the emergence of off-diagonal long range order and a complete spatial delocalization of the vacancies. This temperature is quite close to the temperature where non-classical rotational inertia has been experimentally observed. Finally, we report results on the influence of vacancies in the elastic properties of hcp4 He at zero temperature. 
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653 |a Solid4 He 
653 |a Superfluidity 
653 |a Bose-Einstein condensation 
653 |a Vacancies 
653 |a Quantum Monte Carlo 
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700 1 |a Cazorla, C.  |e verfasserin  |4 aut 
700 1 |a Boronat, J.  |e verfasserin  |4 aut 
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