Emerging Majorana zero modes as a manifestation of edge-bulk incompatibility

Autor:	Park, Jinhong, Gefen, Yuval
Rok vydání:	2023
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Strongly Correlated Electrons
Druh dokumentu:	Working Paper
Popis:	Engineering experimentally accessible solid state platforms that facilitate the realization of Majorana zero modes (MZMs) has been a challenging task over recent years. Here we employ a complex edge consisting of both "downstream" and "upstream" chiral modes to design a MZM-supporting platform, and show that the latter does not necessitate the introduction of an external superconducting contact. Specifically we consider the edge of a $\nu=2/3$ fractional quantum Hall phase, where the downstream (upstream) mode is charged (neutral). We show that the boundary of an elongated quantum anti-dot ("quantum anti-wire") embedded in the $\nu =2/3$ phase can host MZMs in the neutral sector. The emergence of the MZMs is induced by gap-opening processes along the quantum anti-wire, which are incompatible with gap-opening processes in the bulk of the $\nu=2/3$ state. An experimental setup to identify neutral MZMs is proposed. Comment: 7 pages for the main text, 8 pages for the supplementary, 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2311.09960 Zobrazit plný text záznamu View this record from Arxiv