Yoshiaki Ito et al 2004 J. Phys.: Condens. Matter 16 2033 doi:10.1088/0953-8984/16/12/012
Low-temperature specific heats of an anisotropic superconductor, HgxNb3Te4
Yoshiaki Ito1, Toyokazu Katumi1, Hiroyuki Okamoto2, Hiroshi Kaneko1 and Yutaka Ishihara1
Show affiliationsMeasurements of the specific heat of HgxNb3Te4 with 
are reported for the temperature range 
K. The lattice contribution to the specific heat is adequately fitted by a combination of two Debye terms with the Debye temperatures θD of about 15 and 105 K. The data are discussed in terms of several contributions to the Debye term with θD = 15 K: contributions made by CDW formation, Nb atoms displaced from their normal sites and inserted atoms. The bulk superconductivity in Nb3Te4 has been observed by adding Hg, but only a small fraction of the material is superconducting. The electronic contribution γT to the specific heat increases considerably with the addition of Hg. The increase in γT is discussed in terms of a set of bands of electrons and holes.
- PACS
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74.25.Bt Thermodynamic properties
74.70.Ad Metals; alloys and binary compounds (including A15, MgB2, etc.)
- Subjects
- Dates
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Issue 12 (31 March 2004)
Received 15 December 2003
Published 12 March 2004
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Low-temperature specific heats of an anisotropic superconductor, HgxNb3Te4
Yoshiaki Ito et al 2004 J. Phys.: Condens. Matter 16 2033
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Sukyoung Yi et al. 2000 ApJ 533 670
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Gasan Mamed Bagir ogly Abdullaev (on his sixtieth birthday)
Zhores I Alferov et al 1978 Sov. Phys. Usp. 21 891
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The Energy-dependent X-Ray Timing Characteristics of the Narrow-Line Seyfert 1 Mrk 766
A. Markowitz et al. 2007 ApJ 656 116
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