Specific Heat Study of Superconductivity in Cu_{0.061}TiSe_{2}

• Authors: J. Kačmarčík , Z. Pribulová , V. Pal'uchová , P. Husaníková , G. Karapetrov , V. Komanický , P. Samuely
• Languages of publication: EN

Abstracts

EN

In TiSe_{2} a charge-density-waves order is continuously suppressed by copper doping and superconductivity appears. We report a calorimetric study performed on the superconducting single crystal of Cu_{0.061}TiSe_{2} with T_{c}=2.8 K, measured by the ac technique at low temperatures down to 0.6 K and magnetic fields up to 2 T. Sharp specific heat anomaly at the superconducting transition is found. The temperature dependence of the electronic specific heat and the angular dependence of the critical temperature, measured at a fixed magnetic field, consistently indicate on the existence of a single s-wave superconducting gap with a coupling strength of 2Δ/k_{B}T_{c}=3.6, close to BCS limit.

Keywords

EN

72.80.Ga; 74.25.Bt; 71.45.Lr

Discipline

• 71.45.Lr: Charge-density-wave systems(see also 75.30.Fv Spin-density waves)
• 72.80.Ga: Transition-metal compounds
• 74.25.Bt: Thermodynamic properties

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 1
• Pages: 322-323

Dates

published

2014-07

Contributors

author

J. Kačmarčík

• Centre of Low Temperature Physics @ Institute of Experimental Physics, Slovak Academy of Sciences & P.J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovakia

author

Z. Pribulová

• Centre of Low Temperature Physics @ Institute of Experimental Physics, Slovak Academy of Sciences & P.J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovakia

author

V. Pal'uchová

• Centre of Low Temperature Physics @ Institute of Experimental Physics, Slovak Academy of Sciences & P.J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovakia

author

P. Husaníková

• Institute of Electrical Engineering, Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovakia

author

G. Karapetrov

• Department of Physics, Drexel University, 3141 Chestnut St., Philadelphia, PA 19104, USA

author

V. Komanický

• Centre of Low Temperature Physics @ Institute of Experimental Physics, Slovak Academy of Sciences & P.J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovakia

author

P. Samuely

• Centre of Low Temperature Physics @ Institute of Experimental Physics, Slovak Academy of Sciences & P.J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovakia

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Identifiers

DOI

10.12693/APhysPolA.126.322