Strain induced edge magnetism at zigzag edge of a graphene quantum dot


Autoria(s): Shuai Cheng; Jinming Yu; Tianxing Ma; Peres, N. M. R.
Data(s)

08/01/2015

Resumo

We study the temperature dependent magnetic susceptibility of a strained graphene quantum dot by using the determinant quantum Monte Carlo method. Within the Hubbard model on a honeycomb lattice, our unbiased numerical results show that a relative small interaction $U$ may lead to a edge ferromagnetic like behavior in the strained graphene quantum dot, and a possible room temperature transition is suggested. Around half filling, the ferromagnetic fluctuations at the zigzag edge is strengthened both markedly by the on-site Coulomb interaction and the strain, especially in low temperature region. The resultant strongly enhanced ferromagnetic like behavior may be important for the development of many applications.

Identificador

2469-9950

2469-9969

http://hdl.handle.net/1822/39313

10.1103/PhysRevB.91.075410

Idioma(s)

eng

Publicador

APS

Direitos

info:eu-repo/semantics/openAccess

Palavras-Chave #Graphene #2D Materials
Tipo

info:eu-repo/semantics/article