Interplay between topological surface states and superconductivity in SmB6/NbN tunnel junctions
Zhu Lin, Yong Zhou, Ling-Jian Kong, Dongsheng Tang, Hai-Zhou Lu, Shiu-Ming Huang, Rui Zhu, Jun Xu, Fang Lin, Jianbo Wang, Zhi-Min Liao, Dapeng Yu
DOI 10.1103/PhysRevB.96.165408 · Physical Review B
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Abstract
We report the interplay between Cooper pairs in superconductor NbN and topological surface states in SmB6 nanowire through magnetotransport measurements. The NbN electrodes are superconductive below 13.5 K and the SmB6 nanowire shows the surface states dominate transport below 6 K. The tunneling between the topological surface states in SmB6 and the Cooper pairs in NbN gives rise to a transition from positive to negative magnetoresistance between 0 and 14 T.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NbN Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 13.5 | Pressure not reported | onset |
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