Abrechtet al. Reply:

Damped spin excitations in a doped cuprate superconductor with orbital hybridization

“…A possible explanation is that LSCO films on SLAO have a larger c-axis lattice parameter and hence also a larger copper to apical-oxygen distance than what is found in bulk crystals [44,45]. As a consequence, the d z 2 states are less relevant and hence lead to a less pronounced zone-boundary dispersion.…”

Soft x-ray absorption and high-resolution powder x-ray diffraction study of superconducting Ca La1−Ba1.75−La0.25+Cu3O system

“…This has raised the importance of the structural topology for controlling the T c max in these materials. Indeed, recently it has been argued that electronic inhomogeneity controlled by organization of defects, lattice distortions, interface states, nanoscale phase separation in the layered oxides has substantial influence in the superconducting properties of cuprates [4][5][6][7][8][9]. This appears to be common to all layered superconductors as diborides [10][11][12][13] and more recently pnictides [14][15][16][17][18][19].…”

Multicomponent superconductivity: the complex interplay of spin charge and lattice

“…Support for an unconventional lattice mediated pairing mechanism comes also from strain effects on T c . Substantial enhancements of it are obtained when strain is applied to films as well as to bulk material [33,34]. There are -of course -a variety of other experimental results which have not been mentioned here, which give clear evidence that the pairing mechanism in HTSC is not due to strong correlations alone, but that the systems have to be treated as composites, where the doped holes surrounded by a lattice distortion are embedded in an antiferromagnetic matrix, which -in turn -is substantially coupled to the lattice through the strain fields of the local distortions: "spin-charge-lattice polarons".…”