Vortical versus skyrmionic states in the topological phase of a twisted bilayer with d-wave superconducting pairing

Autor(es)

Cadorim, Leonardo R. ; Sardella, Edson ; Milosevic, Milorad, V

• Tipo de documento: Artigo Científico
• Fonte: PHYSICAL REVIEW B; v. 110, n. 6, p. 11-pg., 2024-08-12.

Resumo

It was recently shown that a chiral topological phase emerges from the coupling of two twisted monolayers of superconducting Bi2Sr2CaCu2O8+delta for 2 Sr 2 CaCu 2 O 8 +delta for certain twist angles. In this work, we reveal the behavior of such twisted superconducting bilayers with d x 2 - y 2 pairing symmetry in the presence of an applied magnetic field. Specifically, we show that the emergent vortex matter can serve as a smoking gun for the detection of topological superconductivity in such bilayers. Moreover, we report two distinct skyrmionic states that characterize the chiral topological phase and provide a full account of their experimental signatures and their evolution with the twist angle. (AU)

• Processo FAPESP: 20/03947-2 - Caracterização de propriedades magnéticas e eletrônicas em supercondutores mesoscópicos e nanoestruturados com múltiplas bandas
• Beneficiário: Leonardo Rodrigues Cadorim
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 20/10058-0 - Estudo do estado resistivo de supercondutores mesoscópicos de espessura finita
• Beneficiário: Edson Sardella
• Modalidade de apoio: Auxílio à Pesquisa - Regular