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Journal article
Heat capacity of single-crystal CuxTiSe2 superconductors
Physical review. B, v 88(2)
29 Jul 2013
Abstract
We present heat capacity measurements on a series of superconducting CuxTiSe2 single crystals with different Cu content down to 600 mK and up to 1 T performed by ac microcalorimetry. The samples cover a large portion of the phase diagram from an underdoped to a slightly overdoped region with an increasing superconducting critical temperature and the charge density wave (CDW) order gradually suppressed. The superconducting electronic heat capacity as a function of normalized temperature T/T-c shows no difference regardless of the concentration of copper, i.e., regardless of how much the CDW order is developed in the samples. The data analysis reveals consistently a single s-wave gap with an intermediate coupling strength 2 Delta/k(B)T(c) approximate to 3.7 for all samples.
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Details
- Title
- Heat capacity of single-crystal CuxTiSe2 superconductors
- Creators
- J. Kacmarcik - Centre of Low Temperature Physics at Institute of Experimental Physics, Slovak Academy of Sciences & P. J. Šafárik University, Park Angelinum 9, SK-04001 Košice, SlovakiaZ. Pribulova - Centre of Low Temperature Physics at Institute of Experimental Physics, Slovak Academy of Sciences & P. J. Šafárik University, Park Angelinum 9, SK-04001 Košice, SlovakiaV. Pal'uchova - Slovak Acad Sci, Inst Expt Phys, Ctr Low Temp Phys, SK-04001 Kosice, SlovakiaP. Szabo - Centre of Low Temperature Physics at Institute of Experimental Physics, Slovak Academy of Sciences & P. J. Šafárik University, Park Angelinum 9, SK-04001 Košice, SlovakiaP. Husanikova - Drexel UniversityG. Karapetrov - Drexel UniversityP. Samuely - Centre of Low Temperature Physics at Institute of Experimental Physics, Slovak Academy of Sciences & P. J. Šafárik University, Park Angelinum 9, SK-04001 Košice, Slovakia
- Publication Details
- Physical review. B, v 88(2)
- Publisher
- Amer Physical Soc
- Number of pages
- 5
- Grant note
- CFNT MVEP-Centre of Excellence of Slovak Academy of Sciences APVV-0036-11; VVCE-0058-07; 2/0135/13 / Slovak Research and Development Agency US Steel Kosice ITMS26220120005 / FP7 MNT ERA.Net II. ESO, EU ERDF
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000322574600001
- Scopus ID
- 2-s2.0-84881186315
- Other Identifier
- 991019168697104721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter