Absence of a low-temperature anomaly in the Debye-Waller factor of solid 4He down to 140 mK

被引：27
作者：
Blackburn, E.
Goodkind, J. M.
Sinha, S. K.
Hudis, J.
Broholm, C.
van Duijn, J.
Frost, C. D.
Kirichek, O.
Down, R. B. E.
机构：
[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA
[2] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
[3] Univ Complutense Madrid, Fac Ciencias Quim, Dept Quim Inorgan 1, E-28040 Madrid, Spain
[4] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England
来源：
PHYSICAL REVIEW B | 2007年 / 76卷 / 02期
关键词：
HCP HE-4; NEUTRON-DIFFRACTION; QUANTUM CRYSTALS; HELIUM; PHASE; HE4;
D O I：
10.1103/PhysRevB.76.024523
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The mean-square atomic displacement in hcp-phase solid He-4 has been measured in crystals with a molar volume of 21.3 cm(3). It is temperature independent from 1 K to 140 mK, with no evidence for an anomaly in the vicinity of the proposed supersolid transition. The mean-square displacement is different for in-plane motions (0.122 +/- 0.001 A(2)) and out-of-plane motions (0.150 +/- 0.001 A(2)).
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页数：7
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