Answers are grounded in this paper and cite their sources.
Trigonal PtBi₂ is one of the attractive van-der-Waals materials because of the enhancement of its superconducting transition temperature Tc by doping chalcogen elements such as Se and Te. Recently, it has been reported that Tc of Pt(Bi₁₋ₓSeₓ)₂ is enhanced by a factor of 4, compared to the pristine PtBi₂, together with the polar-nonpolar structural phase transition. Thus, it is desirable to study electrical transport properties for this new superconducting compound. Here, we have performed magnetotransport measurements for Pt(Bi₁₋ₓSeₓ)₂ (x = 0.06 and 0.08) thin-film devices and have observed a peculiar magnetoresistance where a finite hysteresis appears when the superconducting state is broken. By measuring the magnetoresistance systematically, we have attributed this magnetoresistance to the two-level critical-state where fluxons pinned in Pt(Bi₁₋ₓSeₓ)₂ play an important role.
No takes yet. Share an insight, caveat, or question.
Samukawa et al. (2024) studied this question.
Synapse has enriched 8 closely related papers on similar clinical questions. Consider them for comparative context: