Hexagonal and square flux line lattices in CeCoIn5 -: art. no. 187001
Hexagonal and square flux line lattices in CeCoIn5 -: art. no. 187001
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DOI：
10.1103/physrevlett.90.187001
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发表时间：
2003-05-09
影响因子：
8.6
通讯作者：
Canfield, PC
中科院分区：
文献类型：
--
作者：
Eskildsen, MR;Dewhurst, CD;Canfield, PC
利用小角中子散射技术，对d波重费米子超导体CeCoIn5中的磁通量线晶格进行了成像。在低场，我们发现了一个六边形的FLL。在0.6 T左右，它经历了最可能的一阶过渡到方形对称，最近的邻居沿着间隙节点方向定向。这种方阵FLL的方向与基于d波序参数对称性的理论预测相一致。
Using small-angle neutron scattering, we have imaged the magnetic flux line lattice (FLL) in the d-wave heavy-fermion superconductor CeCoIn5. At low fields we find a hexagonal FLL. Around 0.6 T this undergoes what is most likely a first-order transition to square symmetry, with the nearest neighbors oriented along the gap node directions. This orientation of the square FLL is consistent with theoretical predictions based on the d-wave order parameter symmetry.