Low-Field Anomaly in the Specific Heat of s-wave Superconductors due to the Expansion of the Vortex Cores
J. E. Sonier, M. F. Hundley, J. D. Thompson, J. W. Brill
Abstract
The magnetic field dependence of the electronic specific heat C(H) in the s-wave superconductor NbSe2 shows curvature at low fields, resembling the near H1/2 term in C(H) which has been reported in high-Tc superconductors and attributed to a d-wave pairing state. In NbSe2 we find that the low field behavior in C(H) is described quantitatively by the expansion of vortex cores and the field dependence of the magnetic induction B above Hc1. The associated change in the density of quasiparticle states localized in the vortex cores provides a simple explanation for the "low-field anomaly" in C(H) observed in s-wave superconductors.
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.