Sr2IrO4: Gateway to cuprate superconductivity?

Phenomenological theory of cuprate superconductivity

Possible superconductivity in Sr2IrO4 probed by quasiparticle interference

Based on the possible superconducting (SC) pairing symmetries recently proposed, the quasiparticle interference (QPI) patterns in electron- and hole-doped Sr₂IrO₄ are theoretically investigated. In the electron-doped case, the QPI spectra can be explained based on a model similar to the octet model of the cuprates while in the hole-doped case, both the Fermi surface topology and the sign of the...

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...

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...

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...