Proximity-effect-induced superconductivity in a van der Waals heterostructure consisting of a magnetic topological insulator and a conventional superconductor
Peng Dong, Xiaofei Hou, Jiadian He, Yiwen Zhang, Yifan Ding, Xiaohui Zeng, Jinghui Wang, Yueshen Wu, Kenji Watanabe, Takashi Taniguchi, Wei Xia, Yanfeng Guo, Yulin Chen, Xiang Zhou, Wei Li, Jun Li
DOI 10.1103/PhysRevB.109.L140503 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Nontrivial topological superconductivity has received enormous attention due to its potential applications in topological quantum computing. The intrinsic issue concerning the correlation between a topological insulator and a superconductor is, however, still widely open. Here, we systemically report an emergent superconductivity in a cross junction composed of a magnetic topological insulator MnBi2Te4 and a conventional superconductor NbSe2. Remarkably, the interface indicates the existence of a reduced superconductivity at the surface of NbSe2 and a proximity-effect-induced superconductivity at the surface of MnBi2Te4. Furthermore, the in-plane angular-dependent magnetoresistance measurements unveil distinctive features indicative of unconventional pairing symmetry in these superconducting gaps. Our findings extend our views and ideas of topological superconductivity in the superconducting heterostructures with time-reversal symmetry breaking, offering an exciting opportunity to elucidate the cooperative effects on the surface state of a topological insulator aligning a superconductor.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7 | Pressure not reported | onset |
Similar papers
Superconducting proximity effect in a transparent van der Waals superconductor-metal junction
similarity 0.98Jing Li et al.
Source status unknown — claims are unverified
Superconducting proximity effect in a NbSe2/graphene van der Waals junction
similarity 0.98Rai Moriya et al.
Source status unknown — claims are unverified
Superconducting contact and quantum interference between two-dimensional van der Waals and three-dimensional conventional superconductors
similarity 0.97Michael R. Sinko et al.
Source status unknown — claims are unverified
Revealing the two-dimensional electronic structure and anisotropic superconductivity in a natural van der Waals superlattice (PbSe)1.14NbSe2
similarity 0.96Haoyuan Zhong et al.
Source status unknown — claims are unverified
Heat Conduction in the Vortex State of NbSe2: Evidence for Multiband Superconductivity
similarity 0.95Etienne Boaknin et al.
Source status unknown — claims are unverified
Tunneling spectroscopy of few-monolayer NbSe2 in high magnetic fields: Triplet superconductivity and Ising protection
similarity 0.95M. Kuzmanović et al.
Source status unknown — claims are unverified