Suppressing Andreev Bound State Zero Bias Peaks Using a Strongly Dissipative Lead
Shan Zhang, Zhichuan Wang, Dong Pan, Hangzhe Li, Shuai Lu, Zonglin Li, Gu Zhang, Donghao Liu, Zhan Cao, Lei Liu, Lianjun Wen, Dunyuan Liao, Ran Zhuo, Runan Shang, Dong E. Liu, Jianhua Zhao, Hao Zhang
DOI 10.1103/PhysRevLett.128.076803 · Physical Review Letters
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Abstract
Hybrid semiconductor-superconductor nanowires are predicted to host Majorana zero modes that induce zero-bias peaks (ZBPs) in tunneling conductance. ZBPs alone, however, are not sufficient evidence due to the ubiquitous presence of Andreev bound states. Here, we implement a strongly resistive normal lead in InAs-Al nanowire devices and show that most of the expected Andreev bound state–induced ZBPs can be suppressed, a phenomenon known as environmental Coulomb blockade. Our result is the first experimental demonstration of this dissipative interaction effect on Andreev bound states and can serve as a possible filter to narrow down the ZBP phase diagram in future Majorana searches.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| InAs-Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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