Different fractional charges from auto- and cross-correlation noise in quantum Hall states without upstream modes

Autor:	Batra, Navketan, Feldman, D. E.
Rok vydání:	2023
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. Lett. 132, 226601 (2024)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.132.226601
Popis:	Fractional charges of anyons can be extracted from shot noise in two ways. One can use either the auto-correlation noise of the current in one drain or the cross-correlation noise between two drains on the two sides of the device. The former approach typically overestimates the charge. This may happen due to upstream edge modes. We propose a mechanism for the excess auto-correlation noise without upstream modes. It applies to systems with multiple co-propagating edge modes and assumes that the noise is measured at a low but non-zero frequency. Comment: 6 pages, 2 figures. Accepted for publication in Physical Review Letters
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2307.03713 Zobrazit plný text záznamu View this record from Arxiv