JETP Letters

, Volume 85, Issue 9, pp 454–457

Absence of low-temperature anomaly on the melting curve of 4He

  • I. A. Todoshchenko
  • H. Alles
  • H. J. Junes
  • A. Ya. Parshin
  • V. Tsepelin
Condensed Matter

DOI: 10.1134/S0021364007090093

Cite this article as:
Todoshchenko, I.A., Alles, H., Junes, H.J. et al. Jetp Lett. (2007) 85: 454. doi:10.1134/S0021364007090093

Abstract

The melting pressure and pressure in the liquid at a constant density of ultrapure 4He (0.3 ppb of 3He impurities) have been measured with an accuracy of about 0.5 μbar in the temperature range from 10 to 320 mK. The measurements show that the anomaly on the melting curve below 80 mK, which was recently observed [I. A. Todoshchenko et al., Phys. Rev. Lett. 97, 165302 (2006)], is entirely due to an anomaly in the elastic modulus of Be-Cu from which our pressure gauge is made. Thus, the melting pressure of 4He follows the T4 law due to phonons in the whole temperature range from 10 to 320 mK without any attribute of a supersolid transition.

PACS numbers

05.70.-a67.40.Db67.80.-s

Copyright information

© Pleiades Publishing, Ltd. 2007

Authors and Affiliations

  • I. A. Todoshchenko
    • 1
  • H. Alles
    • 1
  • H. J. Junes
    • 1
  • A. Ya. Parshin
    • 2
  • V. Tsepelin
    • 3
  1. 1.Low Temperature LaboratoryHelsinki University of TechnologyFinland
  2. 2.Kapitza Institute for Physical ProblemsRussian Academy of SciencesMoscowRussia
  3. 3.Department of PhysicsLancaster UniversityLancasterUK