Author(s): Zhang, S (Zhang, Shan); Wang, ZC (Wang, Zhichuan); Pan, D (Pan, Dong); Li, HZ (Li, Hangzhe); Lu, S (Lu, Shuai); Li, ZL (Li, Zonglin); Zhang, G (Zhang, Gu); Liu, DH (Liu, Donghao); Cao, Z (Cao, Zhan); Liu, L (Liu, Lei); Wen, LJ (Wen, Lianjun); Liao, DY (Liao, Dunyuan); Zhuo, R (Zhuo, Ran); Shang, RN (Shang, Runan); Liu, DE (Liu, Dong E.); Zhao, JH (Zhao, Jianhua); Zhang, H (Zhang, Hao)

Source: PHYSICAL REVIEW LETTERS Volume: 128 Issue: 7 Article Number: 076803 DOI: 10.1103/PhysRevLett.128.076803 Published: FEB 18 2022

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.

Accession Number: WOS:000766670300005

PubMed ID: 35244449

ISSN: 0031-9007

eISSN: 1079-7114

Full Text: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.128.076803