Searching for superconductivity in high entropy oxide Ruddlesden–Popper cuprate films

Evidence of magnetic mechanism for cuprate superconductivity

A proper understanding of the mechanism for cuprate superconductivity can emerge only by comparing materials in which physical parameters vary one at a time. Here, we present a variety of bulk, resonance and scattering measurements on the (CaxLa1−x ) (Ba1.75−xLa0.25+x ) Cu3Oy high temperature superconductors, in which this can be done. We determine the superconducting, Néel, glass and pseudopag...

A "midinfrared" scenario for cuprate superconductivity.

I conjecture that the mechanism of superconductivity in the cuprates is a saving, due to the improved screening resulting from Cooper pair formation, of the part of the Coulomb energy associated with long wavelengths and midinfrared frequencies. This scenario is shown to provide a plausible explanation of the trend of transition temperature with layering structure in the Ca-spaced compounds and...

Phenomenological theory of cuprate superconductivity

Superconductivity in a spin-ladder cuprate.

Schön et al. (1) claimed to have shown that a two-dimensional structure is not needed to support cuprate superconductivity. Based on the references for the structure of the film provided in their article, however, we believe that this conclusion is premature. In their report on the field-effect-induced modulation of transport properties in thin films of the spin-ladder compound [CaCu2O3]4, Schö...

Stripes and superconductivity in cuprate superconductors

One type of order that has been observed to compete with superconductivity in cuprates involves alternating charge and antiferromagnetic stripes. Recent neutron scattering studies indicate that the magnetic excitation spectrum of a stripe-ordered sample is very similar to that observed in superconducting samples. In fact, it now appears that there may be a universal magnetic spectrum for the cu...