Strain sensitivity and superconducting properties of Nb3Sn from first principles calculations

• Published in: Journal of physics. Condensed matter Vol. 25; no. 13; pp. 135702 - 135708
• Main Authors: De Marzi, G, Morici, L, Muzzi, L, della Corte, A, Buongiorno Nardelli, M
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 03.04.2013; Institute of Physics
• Subjects: Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Electrical engineering. Electrical power engineering; Exact sciences and technology; Granular, melt-textured, amorphous and composite superconductors; Inhomogeneous superconductors and superconducting systems; Materials; Physics; Superconductivity; Strain rate sensitivity; Band structure; Superconducting transitions; Brillouin zones; A-15 compounds; Electron-phonon interactions; Tin alloys; Multifilamentary superconductors; Niobium base alloys; Asymmetry; Phonon dispersion; Phonon mode; Density functional method; Applied load

Using calculations from first principles based on density-functional theory we have studied the strain sensitivity of the A15 superconductor Nb3Sn. The Nb3Sn lattice cell was deformed in the same way as observed experimentally on multifilamentary, technological wires subject to loads applied along t...