Anomalous Flux Line Lattice in CeCoIn5
Anomalous Flux Line Lattice in CeCoIn5
复制标题
CeCoIn5 中的异常磁通线晶格
DOI：
10.1143/jpsj.77.023702
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发表时间：
2008
影响因子：
1.7
通讯作者：
Y. Matsuda
中科院分区：
文献类型：
--
作者：
S. Ohira;H. Shishido;H. Kawano;B. Lake;A. Wiedenmann;K. Kiefer;T. Shibauchi;Y. Matsuda
用小角中子散射技术研究了准二维重费米子超导体cecoin5在垂直场中的通量线晶格（FLL）。在高达3t的磁场下，观察到一个正方形的FLL，在4t的磁场下，观察到衍射斑点的分裂，表明FLL向三角形（菱形）FLL重组。FLL的外形系数在4 t以下几乎与磁场无关，这与传统超导体形成鲜明对比，传统超导体的外形系数随着磁场的增加而迅速衰减。形状因子的这种行为表明涡旋核心周围的异常场分布，可以归因于强泡利顺磁效应和场调谐量子临界点效应。
Flux line lattice (FLL) of a quasi-two-dimensional heavy fermion superconductor CeCoIn 5 in perpendicular field was investigated by small-angle neutron scattering technique. A square FLL was observed in magnetic fields up to 3 T and at 4 T a splitting of diffraction spots was observed, indicating reorganization of the FLL toward a triangular (rhombic) FLL. The FLL form factor is nearly field-independent up to 4 T. This is in sharp contrast to conventional superconductors, in which the form factor rapidly decays with increasing magnetic field. This behavior of the form factor, which indicates the anomalous field distribution around the vortex cores, can be attributed to strong Pauli paramagnetic effects and to field-tuned quantum critical point effects.
影响因子：
8.6
作者：
K. Kakuyanagi;M. Saito;K. Kumagai;S. Takashina;M. Nohara;H. Takagi;Y. Matsuda
通讯作者：
K. Kakuyanagi;M. Saito;K. Kumagai;S. Takashina;M. Nohara;H. Takagi;Y. Matsuda
Tl_2Ba_2Cu_<6+δ>中的反铁磁涡核：核磁共振研究
DOI：
--
发表时间：
2003
期刊：
Physical Review Letters 90
影响因子：
--
作者：
Kakuyanagi Kosuke;Kakuyanagi Kosuke;Kakuyanagi Kosuke;Kakuyanagi Kosuke
通讯作者：
Kakuyanagi Kosuke