Mapping the intrinsic photocurrent streamlines through micromagnetic heterostructure devices

Autor:	Mayes, Morgan, Farahmand, Farima, Grossnickle, Maxwell, Lohmann, Mark, Aldosary, Mohammed, Li, Junxue, Aji, Vivek, Shi, Jing, Song, Justin C. W., Gabor, Nathaniel M.
Rok vydání:	2020
Předmět:	Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Strongly Correlated Electrons
Zdroj:	PNAS 120 (2023) e2221815120 PNAS 120 (39) e2221815120 120 (39) e2221815120 120 (39) e2221815120 120 (39) e2221815120 120 (39) e2221815120 PNAS. 120 (39) e2221815120
Druh dokumentu:	Working Paper
DOI:	10.1073/pnas.2221815120
Popis:	Like air flowing over a wing, optimizing the flow of electronic charge is essential to the operation of nanoscale devices. Unfortunately, the delicate interplay of charge, spin, and heat in complex devices has precluded detailed imaging of charge flow. Here, we report on the visualization of intrinsic charge current streamlines through yttrium iron garnet micromagnetic heterostructures. Scanning photovoltage microscopy of precisely designed devices leads to striking spatial patterns, with prominent photovoltage features emerging in corners and narrow constrictions. These patterns, which evolve continuously with rotation of an external magnetic field, enable rich spatial mapping of fluid-like flow. Taking inspiration from aerodynamic Clark Y airfoils, we engineer micromagnetic wing shaped devices, called electrofoils, which allow us to precisely contort, compress and decompress flowlines of electronic charge.120 (39) e2221815120 Comment: 7 Pages, 4 figures, supplemental materials attached after references
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2002.07902 Zobrazit plný text záznamu View this record from Arxiv