Point-contact spectroscopy of Mo-Re alloy processed by high-pressure torsion
Abstrak
Recently, severe plastic deformation engineering has emerged as a powerful tool to control the main mechanical properties of metals and alloys. In particular, it concerns the high-pressure torsion method where the material is torsionally strained under high pressure between two anvils. It has been found that the reduction in crystallinity of metallic materials by the shear strain in combination with their nanostructuring results in an inherent high strength together with low-temperature superplasticity or improved creep resistance. In this work, using the point-contact spectroscopy technique, we analyze how the local superconducting characteristics of a Mo-Re alloy are modified after high-pressure torsion processing. We record the restoration of suppressed superconductivity on the surface of the samples, a significant strengthening of the electron-phonon coupling in them, and a slight increase in the superconducting transition temperature. The obtained results are explained based on modern concepts about the decisive influence of phonon softening on the basic properties of intrinsically disordered superconductors.
Penulis (8)
V. Tarenkov
V. Krivoruchko
A. Shapovalov
O. Kalenyuk
I. Martynenko
V. Dmytrenko
E. Zhitlukhina
M. Belogolovskii
Akses Cepat
- Tahun Terbit
- 2025
- Bahasa
- en
- Sumber Database
- Semantic Scholar
- DOI
- 10.1063/10.0036928
- Akses
- Open Access ✓