Unknown

Dataset Information

0

Evidence for anisotropic spin-triplet Andreev reflection at the 2D van der Waals ferromagnet/superconductor interface.


ABSTRACT: Fundamental symmetry breaking and relativistic spin-orbit coupling give rise to fascinating phenomena in quantum materials. Of particular interest are the interfaces between ferromagnets and common s-wave superconductors, where the emergent spin-orbit fields support elusive spin-triplet superconductivity, crucial for superconducting spintronics and topologically-protected Majorana bound states. Here, we report the observation of large magnetoresistances at the interface between a quasi-two-dimensional van der Waals ferromagnet Fe0.29TaS2 and a conventional s-wave superconductor NbN, which provides the possible experimental evidence for the spin-triplet Andreev reflection and induced spin-triplet superconductivity at ferromagnet/superconductor interface arising from Rashba spin-orbit coupling. The temperature, voltage, and interfacial barrier dependences of the magnetoresistance further support the induced spin-triplet superconductivity and spin-triplet Andreev reflection. This discovery, together with the impressive advances in two-dimensional van der Waals ferromagnets, opens an important opportunity to design and probe superconducting interfaces with exotic properties.

SUBMITTER: Cai R 

PROVIDER: S-EPMC8602320 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature

altmetric image

Publications

Evidence for anisotropic spin-triplet Andreev reflection at the 2D van der Waals ferromagnet/superconductor interface.

Cai Ranran R   Yao Yunyan Y   Lv Peng P   Ma Yang Y   Xing Wenyu W   Li Boning B   Ji Yuan Y   Zhou Huibin H   Shen Chenghao C   Jia Shuang S   Xie X C XC   Žutić Igor I   Sun Qing-Feng QF   Han Wei W  

Nature communications 20211118 1


Fundamental symmetry breaking and relativistic spin-orbit coupling give rise to fascinating phenomena in quantum materials. Of particular interest are the interfaces between ferromagnets and common s-wave superconductors, where the emergent spin-orbit fields support elusive spin-triplet superconductivity, crucial for superconducting spintronics and topologically-protected Majorana bound states. Here, we report the observation of large magnetoresistances at the interface between a quasi-two-dimen  ...[more]

Similar Datasets

| S-EPMC9650781 | biostudies-literature
| S-EPMC8481126 | biostudies-literature
| S-EPMC10477182 | biostudies-literature
| S-EPMC10063542 | biostudies-literature
| S-EPMC11434145 | biostudies-literature
| S-EPMC10876566 | biostudies-literature
| S-EPMC5376054 | biostudies-literature
| S-EPMC10097715 | biostudies-literature
| S-EPMC10103330 | biostudies-literature
| S-EPMC8597991 | biostudies-literature