最佳掺杂高温超导体中的局域磁矩涨落
超导电性
2008-09-06 v2
摘要
我们展示了在YBa2Cu3O6.95 (Tc=93K)上进行的中子散射实验结果。我们的结果表明,在最佳掺杂的YBCO中,无论是高于还是低于Tc,都存在由关联局域磁矩引起的磁集体模式。类磁振子模式是稳健的,不会被巡游粒子-空穴激发过度阻尼,这可能指向显著的静态或缓慢波动的电荷不均匀性。我们将实验结果与随机相位近似(RPA)下的费米液体(FL)理论预测进行了比较。
引用
@article{arxiv.cond-mat/0610755,
title = {Local moment fluctuations in an optimally-doped high Tc superconductor},
author = {D. Reznik and J. -P. Ismer and I. Eremin and L. Pintschovius and M. Arai and Y. Endoh and T. Masui and S. Tajima},
journal= {arXiv preprint arXiv:cond-mat/0610755},
year = {2008}
}
备注
This is a new version, which is substantially different from the previous one. Physical Review B, in print