Observation of the non-linear Meissner effect.
Observation of the non-linear Meissner effect.
复制标题
观察非线性Meissner效应。
DOI:
10.1038/s41467-022-28790-y
复制
发表时间:
2022-03-07
影响因子:
16.6
通讯作者:
Carrington A
中科院分区:
文献类型:
--
作者:
Wilcox JA;Grant MJ;Malone L;Putzke C;Kaczorowski D;Wolf T;Hardy F;Meingast C;Analytis JG;Chu JH;Fisher IR;Carrington A
A long-standing theoretical prediction is that in clean, nodal unconventional superconductors the magnetic penetration depth λ, at zero temperature, varies linearly with magnetic field. This non-linear Meissner effect is an equally important manifestation of the nodal state as the well studied linear-in-T dependence of λ, but has never been convincingly experimentally observed. Here we present measurements of the nodal superconductors CeCoIn5 and LaFePO which clearly show this non-linear Meissner effect. We further show how the effect of a small dc magnetic field on λ(T) can be used to distinguish gap nodes from non-nodal deep gap minima. Our measurements of KFe2As2 suggest that this material has such a non-nodal state. The non-linear Meissner effect is a key manifestation of unconventional nodal superconductors but its experimental evidence has been elusive. Here, the authors observe the nonlinear Meissner effect in nodal superconductors CeCoIn5 and LaFePO.
登录
查看更多内容
影响因子:
13.6
作者:
Cho K;Kończykowski M;Teknowijoyo S;Tanatar MA;Liu Y;Lograsso TA;Straszheim WE;Mishra V;Maiti S;Hirschfeld PJ;Prozorov R
通讯作者:
Prozorov R
影响因子:
3.7
作者:
Araujo, M. A. N.;Sacramento, P. D.
通讯作者:
Sacramento, P. D.
影响因子:
3.7
作者:
Chia, EEM;Van Harlingen, DJ;Sarrao, JL
通讯作者:
Sarrao, JL
影响因子:
8.6
作者:
Ormeno, RJ;Sibley, A;Fisher, IR
通讯作者:
Fisher, IR
影响因子:
8.6
作者:
Oates, DE;Park, SH;Koren, G
通讯作者:
Koren, G