Evolution of superconductivity in Pr1-xLaxOs4Sb12: Upper critical field measurements
C. R. Rotundu, H. Tsujii, P. Kumar, B. Andraka, H. Sugawara, Y. Aoki, H. Sato
Abstract
Measurements of the upper critical field Hc2 near Tc of Pr1- xLaxOs4Sb12 were performed by specific heat. A positive curvature in Hc2 versus T was observed in samples and concentrations exhibiting two superconducting transitions. These results argue against this curvature being due to two-band superconductivity. The critical field slope - dHc2/dT suggests the existence of a crossover concentration xcr ≈ 0.25, below which there is a rapid suppression of effective electron mass with La-alloying. This crossover concentration was previously detected in the measurement of the discontinuity of C/T at Tc.
Create a lesson
Related papers
High-Temperature Superconductivity of the Fe-Se-H compound
S. I. Bondarenko, A. A. Prokhorov, N. N. Galtsov et al.
Stabilization of Interband Phase Solitons in Two-Band Noncentrosymmetric Superconducting Rings
Yuriy Yerin, Boris Malomed, Stefan-Ludwig Drechsler et al.
Strain-driven orbital-selective reconstruction and bicollinear-to-stripe evolution in FeTe
Zhenfeng Ouyang, Yin Chen, Yi-Heng Tian et al.
Supercurrent detection and manipulation of topological phase transitions in Shiba-Majorana hybrid systems
Debika Debnath, Ioannis Ioannidis, Paramita Dutta et al.
Exact pair density wave in topological moire flat bands and universal superfluid stiffness
Zhengzhi Wu, Ming-rui Li, Hong Yao
Electrical manipulation of oxygen stoichiometry in multiterminal YBa2Cu3O7-δ junctions
Daniel Stoffels, Caio C. Quaglio-Gomes, Nicolas Lejeune et al.