Recent experiments on high-temperature superconductors show paramagnetic behavior localized at grain boundaries (GB). This paramagnetism can be attributed to the presence unconventional d-wave induced π-junctions. By modeling the GB as an array of π and conventional Josephson junction we determine the conditions of the occurrence of the paramagnetic behavior.
@article{arxiv.cond-mat/0303202,
title = {Induced paramagnetic states by localized $\pi $-loops in grain boundaries},
author = {Giacomo Rotoli},
journal= {arXiv preprint arXiv:cond-mat/0303202},
year = {2016}
}