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Controlling electric and magnetic Purcell effects in phosphorene via strain engineering

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Autor(es):
Abrantes, P. P. ; Kort-Kamp, W. J. M. ; Rosa, F. S. S. ; Farina, C. ; Pinheiro, F. A. ; Cysne, Tarik P.
Número total de Autores: 6
Tipo de documento: Artigo Científico
Fonte: PHYSICAL REVIEW B; v. 108, n. 15, p. 13-pg., 2023-10-23.
Resumo

We investigate the spontaneous emission lifetime of a quantum emitter near a substrate coated with phosphorene under the influence of uniaxial strain. We consider both electric dipole and magnetic dipole-mediated spontaneous transitions from the excited to the ground state. The modeling of phosphorene is achieved by employing a tight-binding model that goes beyond the usual low-energy description. We demonstrate that both electric and magnetic decay rates can be widely tuned by the application of uniform strain, ranging from a near-total suppression of the Purcell effect to a remarkable enhancement of more than 1300%, all due to the high flexibility associated with the puckered lattice structure of phosphorene. We also unveil the use of strain as a mechanism to tailor the most probable decay pathways of the emitted quanta. Our results show that uniaxially strained phosphorene is an efficient and versatile material platform for the active control of light-matter interactions thanks to its extraordinary optomechanical properties. (AU)

Processo FAPESP: 21/04861-7 - Interações fotônicas não-lineares mediadas por átomos
Beneficiário:Patrícia Pinto Abrantes
Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado