Work

Electric-field controlled spin in bilayer triangular graphene quantum dots

Year: 2011

Type: article

Abstract: We present theoretical results based on mean-field and exact many-body approaches showing that in bilayer triangular graphene quantum dots with zigzag edges, the magnetism can be controlled by an external vertical electric field. We demonstrate that without electric field, the spins of the two layers of the quantum dot interact ferromagnetically. At a critical value of the electric field, the total spin of the bilayer structure can be turned off or reduced to a single-localized spin, a qubit isolated from contacts and free from interaction with nuclear spins.

Source: Physical Review B

DOI: 10.1103/physrevb.84.035425

Authors: A. D. Güçlü, P. Potasz, P. Hawrylak

Institutions: Institute for Microstructural Sciences, National Research Council Canada, Wrocław University of Science and Technology

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: European Commission, Centre National de la Recherche Scientifique

OpenAlex ID: W1973636697

FWCI: 3.463

Cites: 41

Cited by: 71

Related to: 10