Issue |
Europhys. Lett.
Volume 73, Number 1, January 2006
|
|
---|---|---|
Page(s) | 76 - 82 | |
Section | Condensed matter: structural, mechanical and thermal properties | |
DOI | https://doi.org/10.1209/epl/i2005-10362-1 | |
Published online | 02 December 2005 |
Shadow wave function variational calculation of bond orientational
order and disclination in liquid and solid
1
Physics Department, Ocean University of China - Qingdao, PRC
2
Physics Department, University of Trento - I-38050, Povo, Trento, Italy
Received:
25
April
2005
Accepted:
2
November
2005
By means of shadow wave function (SWF), a variational Monte Carlo simulation
of 500 particles has been performed to study bond orientational order and
disclination defects in liquid and solid . Convincing evidence is
presented that this structural order can be interpreted as entanglement and
interpenetration of defective icosahedra sharing common vertexes and faces.
Thereby, it is demonstrated that a defect as those observed in quantum
solid is due to the relatively large-amplitude vibration of
atoms.
The matching relation of bonds which is used to form a defective icosahedron
has been discussed in this paper.
PACS: 67.40.-w – Boson degeneracy and superfluidity of / 67.40.Yv – Impurities and other defects
© EDP Sciences, 2005
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