Andreev tunneling enhanced by Coulomb oscillations in superconductor-semiconductor hybrid Ge/Si nanowire devices
Xiao-Jie Hao, Hai-Ou Li, Tao Tu, Cheng Zhou, Gang Cao, Guang-Can Guo, Guo-Ping Guo, Wayne Y. Fung, Zhongqing Ji, Wei Lu
DOI 10.1103/PhysRevB.84.195448 · Physical Review B
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Abstract
We explore the magnetoconductance of Ge/Si core/shell nanowire quantum dot devices contacted by superconducting leads. Significant magnetoconductance peaks around zero field are observed and show a periodic modulation with gate voltage as discrete states of the quantum dot are turned on- and off-resonance with the Fermi energy in the superconducting electrodes. The ability to create and control coherent transport in superconductor-semiconductor hybrid nanostructures allows for new opportunities in the study of various fundamental competing effects such as superconductivity and electron-electron interactions.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.2 | Pressure not reported | unknown |
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