{"id":"doi:10.1038/s41467-019-09771-0","kind":"article","title":"Concomitant opening of a bulk-gap with an emerging possible Majorana zero mode","authors":["Anna Grivnin","Ella Bor","Moty Heiblum","Yuval Oreg A","Hadas Shtrikman"],"author_count":5,"year":2019,"published":"2019-04-29","venue":"Nature Communications","cited_by":74,"doi":"10.1038/s41467-019-09771-0","arxiv_id":null,"nct_id":null,"source_url":"https://doi.org/10.1038/s41467-019-09771-0","archive_url":"https://space-kitty.com/papers/doi:10.1038/s41467-019-09771-0","updated":null,"pmid":"31036841","pmcid":null,"openalex_id":"W2941959618","pdf_url":"https://www.nature.com/articles/s41467-019-09771-0.pdf","abstract":"Majorana quasiparticles are generally detected in a 1D topological superconductor by tunneling electrons into its edge, with an emergent zero-bias conductance peak (ZBCP). However, such a ZBCP can also result from other mechanisms, hence, additional verifications are required. Since the emergence of a Majorana must be accompanied by an opening of a topological gap in the bulk, two simultaneous measurements are performed: one in the bulk and another at the edge of a 1D InAs nanowire coated with epitaxial aluminum. Only under certain experimental parameters, a closing of the superconducting bulk-gap that is followed by its reopening, appears simultaneously with a ZBCP at the edge. Such events suggest the occurrence of a topologically non-trivial phase. Yet, we also find that ZBCPs are observed under different tuning parameters without simultaneous reopening of a bulk-gap. This demonstrates the importance of simultaneous probing of bulk and edge in the identification of Majorana edge-states.","abstract_license":"CC-BY (publisher license, via OpenAlex)","license":"cc-by","is_open_access":true,"retracted":false,"peer_reviewed":null,"categories":["Topological Materials and Phenomena"],"details":null,"provenance":"openalex","attribution":"Abstract of \"Concomitant opening of a bulk-gap with an emerging possible Majorana zero mode\" by Anna Grivnin, Ella Bor, Moty Heiblum et al., https://doi.org/10.1038/s41467-019-09771-0, used under its Creative Commons Attribution license (CC-BY); markup removed, otherwise unmodified.","topics":[{"slug":"topological-superconductivity","name":"Topological Superconductivity & Majorana Modes","domain_slug":"superconductivity"}],"cited_in_dossiers":[]}