Tunneling magnetoresistance in junctions composed of ferromagnets and time-reversal invariant topological superconductors
Tunneling magnetoresistance in junctions composed of ferromagnets and time-reversal invariant topological superconductors
复制标题
由铁磁体和时间反转不变拓扑超导体组成的结中的隧道磁阻
DOI:
10.1088/1367-2630/18/2/023031
复制
发表时间:
2015-10
影响因子:
3.3
通讯作者:
Wan, Shaolong
中科院分区:
文献类型:
--
作者:
Yan, Zhongbo;Wan, Shaolong
Tunneling magnetoresistance between two ferrromagnets is an issue of fundamental importance in spintronics. In this work, we show that tunneling magnetoresistance can also emerge in junctions composed of ferromagnets and time-reversal invariant topological superconductors without spin-rotation symmetry. Here the physical origin is that when the spin-polarization direction of an injected electron from the ferromagnet lies in the same plane of the spin-polarization direction of Majorana zero modes, the electron will undergo a perfect spin-equal Andreev reflection, while injected electrons with other spin-polarization directions will be partially Andreev reflected and partially normal reflected, which consequently has a lower conductance, and therefore, the magnetoresistance effect emerges. Compared to conventional magnetic tunnel junctions, an unprecedented advantage of the junctions studied here is that arbitrary high tunneling magnetoresistance can be obtained even when the magnetization of the ferromagnets are weak and the insulating tunneling barriers are featureless. Our findings provide a new fascinating mechanism to obtain high tunneling magnetoresistance.
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影响因子:
56.9
作者:
Nadj-Perge, Stevan;Drozdov, Ilya K.;Yazdani, Ali
通讯作者:
Yazdani, Ali
影响因子:
1.8
作者:
S. Yuasa;T. Sato;E. Tamura;Yoshishige Suzuki;H. Yamamori;K. Ando;T. Katayama
通讯作者:
S. Yuasa;T. Sato;E. Tamura;Yoshishige Suzuki;H. Yamamori;K. Ando;T. Katayama
影响因子:
3.3
作者:
Zhongbo Yan;S. Wan
通讯作者:
Zhongbo Yan;S. Wan
DOI:
10.1209/0295-5075/111/47002
发表时间:
2014-11
期刊:
Europhysics Letters
影响因子:
--
作者:
Zhongbo Yan;S. Wan
通讯作者:
Zhongbo Yan;S. Wan
影响因子:
3.7
作者:
Alicea, Jason
通讯作者:
Alicea, Jason