Zusammenfassung
High-temperature cuprate superconductors exhibit extremely local nanoscale
phenomena and strong sensitivity to doping. While other experiments
have looked at nanoscale interfaces between layers of different dopings,
we focus on the interplay between naturally inhomogeneous nanoscale
regions. Using scanning tunneling microscopy to carefully track the
same region of the sample as a function of temperature, we show that
regions with weak superconductivity can persist to elevated temperatures
if bordered by regions of strong superconductivity. This suggests
that it may be possible to increase the maximum possible transition
temperature by controlling the distribution of dopants.
Nutzer