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Large Andreev bound state zero-bias peaks in a weakly dissipative environment

2023-03-02

 

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

Source: PHYSICAL REVIEW B Volume: 106 Issue: 20 Article Number: 205421 DOI:10.1103/PhysRevB.106.205421 Published: NOV 28 2022

Abstract: The detection of Majorana zero modes still remains elusive after extensive searches. The current debates focus on the experimental observation of large zero-bias peaks (ZBPs) near 2e2/h in tunneling conductance. These large ZBPs, induced by Andreev bound states, mimic the Majorana signature and suggest that new diagnostic tools or experimental knobs are highly desired. In this paper, we introduce an interaction effect on these large ZBPs using a weakly dissipative probe. By increasing temperature (T ), we establish that these large ZBPs can reveal a zero-bias conductance increase, a non-Fermi-liquid behavior due to the environmental Coulomb blockade. This observation forms a sharp contrast to nondissipative devices where ZBPs follow a Fermi-liquid T dependence. Our results open prospects for a better understanding of large ZBPs induced by Andreev bound states and hold relevance for future Majorana detection.

Accession Number: WOS:000920222400001

ISSN: 2469-9950

eISSN: 2469-9969

Full Text: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.106.205421



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