La$_{1.855}$Sr$_{0.145}$CuO$_{4}$中场致软模量子相变
超导电性
2009-05-01 v1 强关联电子
摘要
对高温超导体LaSrCuO的非弹性中子散射实验揭示了一个磁激发能隙，该能隙在垂直于CuO平面的外加磁场作用下持续减小。能隙在诱导长程非公度反铁磁序所需的临界场处消失，这为场致软模驱动的量子相变提供了令人信服的证据。
引用
@article{arxiv.0902.1191,
title = {Field-induced soft-mode quantum phase transition in La$_{1.855}$Sr$_{0.145}$CuO$_{4}$},
author = {J. Chang and N. B. Christensen and Ch. Niedermayer and K. Lefmann and H. M. Roennow and D. F. McMorrow and A. Schneidewind and P. Link and A. Hiess and M. Boehm and R. Mottl and S. Pailhes and N. Momono and M. Oda and M. Ido and J. Mesot},
journal= {arXiv preprint arXiv:0902.1191},
year = {2009}
}