Heat Capacity of Single Crystal CuxTiSe2 Superconductors
We present heat capacity measurements on a series of superconducting Cu\(_x\)TiSe\(_2\) 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 wi...
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| creator | Kacmarcik, J Pribulova, Z Paluchova, V Szabo, P Husanikova, P Karapetrov, G Samuely, P |
| description | We present heat capacity measurements on a series of superconducting Cu\(_x\)TiSe\(_2\) 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 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 \(2\Delta/k_BT_c\) = 3.7 for all samples. |
| doi_str_mv | 10.48550/arxiv.1308.2290 |
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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 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. 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| subjects | Charge density waves Copper Critical temperature Data analysis Heat Phase diagrams Physics - Superconductivity Single crystals Specific heat Superconductivity |
| title | Heat Capacity of Single Crystal CuxTiSe2 Superconductors |
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