Monolayer Magnetic Metal with Scalable Conductivity

作     者：Parfenov, Oleg E. Averyanov, Dmitry V. Sokolov, Ivan S. Mihalyuk, Alexey N. Kondratev, Oleg A. Taldenkov, Alexander N. Tokmachev, Andrey M. Storchak, Vyacheslav G. 

作者机构：National Research Center "Kurchatov Institute" Kurchatov Sq. 1 Moscow123182 Russia Institute of High Technologies and Advanced Materials Far Eastern Federal University Vladivostok690950 Russia Institute of Automation and Control Processes FEB RAS Vladivostok690041 Russia 

出 版 物：《arXiv》 (arXiv)

年 卷 期：2024年

核心收录：

主　　题：Monolayers 

摘      要：2D magnets have emerged as a class of materials highly promising for studies of quantum phenomena and applications in ultra-compact spintronics. Current research aims at design of 2D magnets with particular functional properties. A formidable challenge is to produce metallic monolayers: the material landscape of layered magnetic systems is strongly dominated by insulators;rare metallic magnets, such as Fe3GeTe2, become insulating as they approach the monolayer limit. Here, electron transport measurements demonstrate that the recently discovered 2D magnet GdAlSi – graphene-like AlSi layers coupled to layers of Gd atoms – remains metallic down to a single monolayer. Band structure analysis indicates the material to be an electride, which may stabilize the metallic state. Remarkably, the sheet conductance of 2D GdAlSi is proportional to the number of monolayers – a manifestation of scalable conductivity. The GdAlSi layers are epitaxially integrated with silicon, facilitating applications in electronics. © 2024, CC BY.