Emergent superconductivity in topological-kagome-magnet/metal heterostructures

He Wang, Yanzhao Liu, Ming Gong, Hua Jiang, Xiaoyue Gao, Wenlong Ma, Jiawei Luo, Haoran Ji, Jun Ge, Shuang Jia, Peng Gao, Ziqiang Wang (), X. C. Xie and Jian Wang ()
Additional contact information
He Wang: Peking University
Yanzhao Liu: Peking University
Ming Gong: Peking University
Hua Jiang: Soochow University
Xiaoyue Gao: Peking University
Wenlong Ma: Peking University
Jiawei Luo: Peking University
Haoran Ji: Peking University
Jun Ge: Peking University
Shuang Jia: Peking University
Peng Gao: Peking University
Ziqiang Wang: Boston College
X. C. Xie: Peking University
Jian Wang: Peking University

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract Itinerant kagome lattice magnets exhibit many novel correlated and topological quantum electronic states with broken time-reversal symmetry. Superconductivity, however, has not been observed in this class of materials, presenting a roadblock in a promising path toward topological superconductivity. Here, we report that novel superconductivity can emerge at the interface of kagome Chern magnet TbMn6Sn6 and metal heterostructures when elemental metallic thin films are deposited on either the top (001) surface or the side surfaces. Superconductivity is also successfully induced and systematically studied by using various types of metallic tips on different TbMn6Sn6 surfaces in point-contact measurements. The anisotropy of the superconducting upper critical field suggests that the emergent superconductivity is quasi-two-dimensional. Remarkably, the interface superconductor couples to the magnetic order of the kagome metal and exhibits a hysteretic magnetoresistance in the superconducting states. Taking into account the spin-orbit coupling, the observed interface superconductivity can be a surprising and more realistic realization of the p-wave topological superconductors theoretically proposed for two-dimensional semiconductors proximity-coupled to s-wave superconductors and insulating ferromagnets. Our findings of robust superconductivity in topological-Chern-magnet/metal heterostructures offer a new direction for investigating spin-triplet pairing and topological superconductivity.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-023-42779-1 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42779-1

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-023-42779-1

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().