Fully Tunable Fano Resonances in Chiral Electronic Transport

Autor:	Ye, Ai-Ying, Zeng, Zhao Yang
Rok vydání:	2024
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Other Condensed Matter
Druh dokumentu:	Working Paper
Popis:	Fano resonance is believed to arise when a direct path interferes with a resonant path. We demonstrate that this is not true for chiral electronic transmission without additional direct paths. To address the Fano effect in chiral electronic transport, we suggest an electronic Mach-Zehnder-Fano interferometer (MZFI), which combines a quantum dot with an electronic Mach-Zehnder interferometer. Backscattering is completely suppressed in chiral electronic transport, yielding perfect Fano profiles that can be fully adjusted by an external magnetic flux in the transmission, linear conductance, and differential spectra. Even the current and shot noise for a symmetric interferometer with two arms of the same length exhibit fully controllable resonances and distinct Fano resonance characteristics. Along with the profiles, all of the transport spectra follow the same evolution pattern in a cycle that is resistant to changes in the device's defining parameters. Comment: 16 pages, 4 ifgures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2404.13597 Zobrazit plný text záznamu View this record from Arxiv