Mechanical Control of Quantum Transport in Graphene

This article reports measurements of quantum transport in strained graphene transistors which agree quantitatively with models based on mechanically-induced gauge potentials. A scalar potential is mechanically induced in-situ to modify graphene's work function by up to 25 meV. Mechanically generated vector potentials suppress the ballistic conductance of graphene by up to 30 % and control its quantum interferences. The data were measured with a custom experimental platform able to precisely tune both the mechanics and electrostatics of suspended graphene transistors at low-temperature over a broad range of strain (up to 2.6 %). This work opens many opportunities to harness quantitative strain effects in 2DM quantum transport and technologies. This article is protected by copyright. All rights reserved.PMID:38558481 | DOI:10.1002/adma.202313629
Source: Adv Data - Category: Epidemiology Authors: Source Type: research