Nonuniform Spin Triplet Superconductivity due to Antisymmetric Spin–Orbit-Coupling in Noncentrosymmetric Superconductor CePt3Si
Nonuniform Spin Triplet Superconductivity due to Antisymmetric Spin–Orbit-Coupling in Noncentrosymmetric Superconductor CePt3Si
复制标题
非中心对称超导体 CePt3Si 中反对称自旋轨道耦合导致的非均匀自旋三重态超导
DOI：
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复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Y. Hasegawa
中科院分区：
文献类型：
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作者：
Hiroko Tanaka;H. Kaneyasu;Y. Hasegawa
我们证明了非中心对称系统中自旋三重态超导的非均匀态[Fulde-Ferrell-Larkin-Ovchinnikov（FFLO）态]即使在没有磁场的情况下也能通过反对称自旋-轨道耦合稳定。反对称自旋轨道耦合降低了自旋三重态超导的转变温度。这种对破缺效应类似于磁场对自旋单重态超导的泡利对破缺效应，即FFLO态稳定在外磁场的泡利极限（或Eschrasekhar-Clogston极限）附近.由于非均匀超导态中存在无带隙激发，因此某些物理量如比热、穿透深度等应服从与均匀超导态不同的温度依赖关系。讨论了在CePt3Si中实现非均匀态的可能性.
We show that the nonuniform state [Fulde–Ferrell–Larkin–Ovchinnikov (FFLO) state] of the spin triplet superconductivity in noncentrosymmetric systems is stabilized by antisymmetric spin–orbit coupling even if the magnetic field is absent. The transition temperature of the spin triplet superconductivity is reduced by the antisymmetric spin–orbit coupling in general. This pair breaking effect is shown to be similar to the Pauli pair breaking effect due to magnetic field for the spin singlet superconductivity, in which FFLO state is stabilized near the Pauli limit (or Chandrasekhar–Clogston limit) of external magnetic field. Since there are gapless excitations in nonuniform superconducting state, some physical quantities such as specific heat and penetration depth should obey different temperature-dependences from those in the uniform superconductivity. We discuss the possibility of the realization of nonuniform state in CePt 3 Si.
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
影响因子：
1.7
作者：
S. Fujimoto
通讯作者：
S. Fujimoto
无反演对称性的反铁磁体 CeIrSi3 中压力诱导的重芬尼翁超导性
DOI：
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发表时间：
2006
期刊：
J. Phys. Soc. Jpn 75, 043703
影响因子：
--
作者：
I.;Sugitani;et. al.
通讯作者：
et. al.