Long-range supercurrents induced by the interference effect of opposite-spin triplet state in clean superconductor-ferromagnet structures
Long-range supercurrents induced by the interference effect of opposite-spin triplet state in clean superconductor-ferromagnet structures
复制标题
洁净超导铁磁体结构中反自旋三重态干涉效应引起的长程超电流
DOI：
10.1088/2053-1591/3/7/076003
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发表时间：
2016-01
影响因子：
2.3
通讯作者：
Wu JS
中科院分区：
文献类型：
--
作者：
Meng Hao;Wu Jiansheng;Meng Hao;Ren Yajie;Meng Hao;Wu Xiuqiang;Wu Xiuqiang;Ren Mengyuan;Wu JS
By now it is known that in an s-wave superconductor-ferromagnet-superconductor (SFS) structure the supercurrent induced by spin singlet pairs can only transmit a short distance of the order of magnetic coherence length. The long-range supercurrent, taking place on the length scale of the normal metal coherence length, will be maintained by equal-spin triplet pairs, which can be generated by magnetic inhomogeneities in the system. In this paper, we have shown an unusual long-range supercurrent, which can take place in clean SF 1 F 2 S junction with non-parallel orientation of magnetic moments. The mechanism behind the enhancement of Josephson current is provided by the interference of the opposite-spin triplet states deriving from S / F 1 and F 2 / S interfaces when both ferromagnetic layers have the same values of the length and exchange field. This discovery can offer a natural explanation for recent experiments (Robinson et al 2010 Phys. Rev. Lett. 104 207001; Baek et al 2014 Nat. Commun. 5 3888).
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影响因子：
8.6
作者：
Blum, Y;Tsukernik, A;Palevski, A
通讯作者：
Palevski, A
影响因子：
19.6
作者：
Gingrich, E. C.;Niedzielski, Bethany M.;Birge, Norman O.
通讯作者：
Birge, Norman O.
影响因子：
8.6
作者：
Jason W. A. Robinson;Samanta Piano;Samanta Piano;G. Burnell;Christopher Bell;M. Blamire
通讯作者：
Jason W. A. Robinson;Samanta Piano;Samanta Piano;G. Burnell;Christopher Bell;M. Blamire
影响因子：
3.7
作者：
Born, F.;Siegel, M.;Kupriyanov, M. Yu.
通讯作者：
Kupriyanov, M. Yu.
超导体-铁磁体-超导体结中的特殊长程超电流，在铁磁区域包含非共线磁畴
影响因子：
3.2
作者：
H. Meng, X. Q. Wu, Y. J. Ren
通讯作者：
H. Meng, X. Q. Wu, Y. J. Ren