Observations of Pauli paramagnetic effects on the flux line lattice in CeCoIn5

Observations of Pauli paramagnetic effects on the flux line lattice in CeCoIn5
复制标题

CeCoIn5 中磁通线晶格泡利顺磁效应的观察

DOI:
10.1088/1367-2630/12/2/023026
复制
发表时间:
2010
影响因子:
3.3
通讯作者:
C. Petrovic
C. Petrovic
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
J. White;P. Das;M. Eskildsen;L. Debeer;L. Debeer;E. Forgan;A. Bianchi;M. Kenzelmann;M. Zolliker;S. Gerber;J. Gavilano;J. Mésot;J. Mésot;R. Movshovich;E. Bauer;J. Sarrao;C. Petrovic

文献摘要

参考文献

被引文献

相似文献

从小角度中子散射研究的磁通线晶格(FLL)在CeCoIn 5,与施加的磁场平行的晶体c轴,我们得到的场和温度依赖的FLL形状因子(FF),这是一个衡量的空间变化的字段在混合状态。我们将我们早期的工作(比安奇等2008年科学319 177)的温度高达1250 mK。在整个温度范围内,磁通线磁芯中的顺磁性导致FF随磁场的增加。在HC 2附近,FF再次下降,我们的研究结果表明,这种下降延伸到建议的Fulde-Ferrell-Larkin-Ovchinnikov(FFLO)区域之外。相反,我们将这种减少归因于库珀配对的顺磁抑制。在较高的温度下,观察到一个逐渐交叉向更传统的混合状态的行为。
From small-angle neutron scattering studies of the flux line lattice (FLL) in CeCoIn5, with magnetic field applied parallel to the crystal c-axis, we obtain the field and temperature dependence of the FLL form factor (FF), which is a measure of the spatial variation of the field in the mixed state. We extend our earlier work (Bianchi et al 2008 Science 319 177) to temperatures up to 1250 mK. Over the entire temperature range, paramagnetism in the flux line cores results in an increase of the FF with field. Near Hc2 the FF decreases again, and our results indicate that this fall-off extends outside the proposed Fulde–Ferrell–Larkin–Ovchinnikov (FFLO) region. Instead, we attribute the decrease to a paramagnetic suppression of Cooper pairing. At higher temperatures, a gradual crossover toward more conventional mixed state behavior is observed.
DOI: 10.1103/physrevlett.94.047602
发表时间: 2004-05
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