Lateral interfaces of transition metal dichalcogenides: A stable tunable one-dimensional physics platform

Avalos-Ovando, Oscar; Mastrogiuseppe, Diego; Ulloa, Sergio E.

Abstract

We study in-plane lateral heterostructures of commensurate transition-metal dichalcogenides, such as MoS2-WS2 and MoSe2-WSe2, and find interfacial and edge states that are highly localized to these regions of the heterostructure. These are one-dimensional (1D) in nature, lying within the band gap of the bulk structure and exhibiting complex orbital and spin structure. We describe such heteroribbons with a three-orbital tight-binding model that uses first principles and experimental parameters as input, allowing us to model realistic systems. Analytical modeling for the 1D interfacial bands results in long-range hoppings due to the hybridization along the interface, with strong spin-orbit couplings. We further explore the Ruderman-Kittel-Kasuya-Yosida indirect interaction between magnetic impurities located at the interface. The unusual features of the interface states result in effective long-range exchange noncollinear interactions between impurities. These results suggest that transition-metal dichalcogenide interfaces could serve as stable, tunable 1D platform with unique properties for possible use in exploring Majorana fermions, plasma excitations, and spintronics applications.

Más información

Título según WOS: ID WOS:000454766900001 Not found in local WOS DB
Título de la Revista: PHYSICAL REVIEW B
Volumen: 99
Número: 3
Editorial: AMER PHYSICAL SOC
Fecha de publicación: 2019
DOI:

10.1103/PhysRevB.99.035107

Notas: ISI