Nanoscale Proximity Effect in the High Temperature Superconductor Bi-2212
Superconductivity
2010-12-03 v2
Abstract
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.
Keywords
Cite
@article{arxiv.1002.0884,
title = {Nanoscale Proximity Effect in the High Temperature Superconductor Bi-2212},
author = {Colin V. Parker and Aakash Pushp and Abhay N. Pasupathy and Kenjiro K. Gomes and Jinsheng Wen and Zhijun Xu and Shimpei Ono and Genda Gu and Ali Yazdani},
journal= {arXiv preprint arXiv:1002.0884},
year = {2010}
}
Comments
To appear in Physical Review Letters