2024
DOI: 10.1088/1367-2630/ad4c5f
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Two-electron conduction band of a graphene quantum dot and coherent spin manipulation

Wen-Jun Xu,
Rui-Jiang Liu,
Qing-Rui Dong

Abstract: To get a carbon-based qubit, we pay attention to the two-electron conduction band of a graphene quantum dot (GQD) in the presence of an external magnetic field and an extrinsic Rashba spin-orbit interaction (SOI). To help understand the formation of the two-electron spectra, we first calculate the tight-binding (TB) spectra. There exist the sensitivity of the conduction band to magnetic fields and the mixing of spin states induced by a Rashba SOI. The two factors inspire the study of the magnetic-field modulation … Show more

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