Year: 2025
Type: article
Abstract: With recent advances in strain-engineering technology of graphene and 2D materials, graphene quantum dots (QDs) defined by the strain-induced pseudo-magnetic fields have been of interest, with the feasibility of tunable graphene qubits (Park et al 2023 Quantum Sci. Technol. 8 025012). Here, we theoretically investigate how the electronic states of the nanobubble QDs are influenced by the geometrical anisotropy of the elliptical-shape nanobubbles. We examine the energy levels of the single and double QD (DQD) spectra by varying the elliptical deformation along the zigzag (x) and armchair (y) directions, respectively. We found that the single and DQD show distinguished behavior with regard to the direction of the elliptical deformation. While the single QD levels are substantially affected by the y-directional deformation, the DQD levels are largely shifted by the x-directional deformation.
Authors: Myung-Chul Jung, Nojoon Myoung
Institution: Chosun University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Funder: Chosun University
Award: G3804400245
OpenAlex ID: W4413820971