Abstract
Is V3Si a two-band or a single-band superconductor? Everyone who searches the literature for this question will find conflicting answers, for V3Si was claimed to be a perfect example of two-band and claimed to be a perfect example of single-band superconductivity. In this paper we intend to clarify the situation by presenting new experimental facts acquired from the magnetic properties of a V3Si single crystal. We probe for field-dependent two-band effects by analyzing the reversible magnetization at different temperatures, and we probe for temperature-dependent two-band effects by analyzing the superfluid density obtained by two different methods at different magnetic fields. All our results are reliably described within the single-band models and thus support the single-band scenario for V3Si but do not completely rule out the presence of a very small second gap.
Highlights
Superconductivity in V3Si has been studied since 1953[1] and was considered to be of conventional s-wave, single-band nature for most of the time
Let us sum up what we have learned from testing V3Si for two-band superconductivity
We have shown that the field dependence of the reversible magnetization matches the single-band Ginzburg-Landau theory reliably well
Summary
Superconductivity in V3Si has been studied since 1953[1] and was considered to be of conventional s-wave, single-band nature for most of the time.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
