Repozytorium publikacji - Politechnika Gdańska

The niobium rich selenide compound Nb5Se4 was synthesized at ambient pressure by high-temperature solid–state reaction in a sealed Ta tube. Resistivity and heat capacity measurements reveal that this compound is superconducting, with a Tc = 1.85K. The electronic contribution to the specific heat γ and the Debye temperature are found to be 18.1 mJmol−1K−2 and 298 K respectively. The calculated electron-phonon coupling constant λep = 0.5 and the ΔCp/γTc = 1.42 ratio imply that Nb5Se4 is a weak coupling BCS superconductor. The upper critical field and coherence length are found to be 1.44 T and 15.1 nm, respectively.

Autorzy

• prof. dr hab. inż. Tomasz Klimczuk link otwiera się w nowej karcie ,
• K. Baroudi,
• J.w. Krizan,
• Agnieszka Kozub link otwiera się w nowej karcie ,
• R.j. Cava