Enhanced superconductivity in PbTe-In hybrids
Zuhan Geng, Fangting Chen, Yichun Gao, Lining Yang, Yuhao Wang, Shuai Yang, Shan Zhang, Zonglin Li, Wenyu Song, Jiaye Xu, Zehao Yu, Ruidong Li, Zhaoyu Wang, Xiao Feng, Tiantian Wang, Yunyi Zang, Lin Li, Runan Shang, Qi-Kun Xue, Ke He, Hao Zhang
DOI 10.1103/8czc-tn4z · Physical Review Materials
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
We report the realization of epitaxial indium thin films on PbTe nanowires. The film is continuous and forms an atomically sharp interface with PbTe. Tunneling devices reveal a hard superconducting gap. The gap size, 1.08–1.18 meV, is twice as large as bulk indium's (∼0.5 meV), due to the presence of PbTe. A similar enhancement is also observed in the critical temperature of In on a PbTe substrate. Subgap peaks appear at finite magnetic fields. The effective g factor (15–45) is notably enhanced compared to bare PbTe wires (<10) due to the presence of In, differing from Al hybrids. Josephson devices exhibit gate-tunable supercurrents. The PbTe-In hybrid enhances the properties of both the superconductivity of In and g factors of PbTe, and thus may enable exotic phases of matter such as topological superconductivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| In Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6 | Pressure not reported | onset |
| In Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.8 | Pressure not reported | onset |
| In Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.4 | Pressure not reported | unknown |
Similar papers
Enhanced Vortex Damping by Eddy Currents in Superconductor-Semiconductor Hybrids
similarity 0.93M. Danckwerts et al.
Source status unknown — claims are unverified
Superconducting properties of In-Ge mixture films
similarity 0.92Alexander Gerber & Guy Deutscher
Source status unknown — claims are unverified
Enhanced superconducting transition temperatures in the rocksalt-type superconductors In1−xSnxTe (x≤0.5)
similarity 0.92Kaya Kobayashi et al.
Source status unknown — claims are unverified
Superconductivity induced by In substitution into the topological crystalline insulator Pb0.5Sn0.5Te
similarity 0.92R. D. Zhong et al.
Source status unknown — claims are unverified
Conductance spectra of (Nb, Pb, In)/NbP superconductor/Weyl semimetal junctions
similarity 0.92G. Grabecki et al.
Source status unknown — claims are unverified
Interfacial superconductivity in semiconducting monochalcogenide superlattices
similarity 0.92N. Ya. Fogel et al.
Source status unknown — claims are unverified