Absence of low temperature anomaly in the Debye-Waller factor of solid He-4

C. Broholm; C. D. Frost; E. Blackburn; J. Hudis; J. M. Goodkind; J. van Duijn; O. Kirichek; R. B. E. Down; S. K. Sinha

arxiv: cond-mat/0702537 · v2 · submitted 2007-02-23 · ❄️ cond-mat.other · cond-mat.stat-mech

Absence of low temperature anomaly in the Debye-Waller factor of solid He-4

E. Blackburn , J. M. Goodkind , S. K. Sinha , J. Hudis , C. Broholm , J. van Duijn , C. D. Frost , O. Kirichek

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R. B. E. Down

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classification ❄️ cond-mat.other cond-mat.stat-mech

keywords anomalydisplacementhe-4meanmotionssolidsquaretemperature

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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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Absence of low temperature anomaly in the Debye-Waller factor of solid He-4

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