Experimental constraints on some mechanisms for high-temperature superconductivity

Abstract

Since its discovery, many mechanisms have been suggested to explain the phenomenon of high-temperature superconductivity in oxides. We propose that experimental data, along with theoretical models, can place constraints on or exclude many of these mechanisms. The isotope shift α, the transition temperature Tc, the ratio of the electronic-specific-heat jump to the normal-state specific heat ΔC/γTc, and the superconducting gap ratio 2Δ/kBTc are considered. We find limits on the applicability of solely phonon-based and combined phonon-electronic mechanisms.

Source-reported materials — not catalogue approval

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