• 文献标题:   Study of RKKY Interactions in a Bilayer Graphene Structure with Non-equivalent Planes
  • 文献类型:   Article
  • 作  者:   MHIRECH A, AOUINI S, ALAOUIISMAILI A, BAHMAD L
  • 作者关键词:   magnetic propertie, rkky interaction, critical temperature, bilayer graphene structure, monte carlo simulation, nonequivalent plane, crystal field
  • 出版物名称:   JOURNAL OF SUPERCONDUCTIVITY NOVEL MAGNETISM
  • ISSN:   1557-1939 EI 1557-1947
  • 通讯作者地址:   Mohammed V Univ
  • 被引频次:   7
  • DOI:   10.1007/s10948-017-4146-x
  • 出版年:   2017

▎ 摘  要

In this paper, we study the magnetic properties and the effect of the Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions in a bilayer graphene structure with non-equivalent planes of a ferromagnetic consisting of the spins sigma = 1 / 2 and S = 1. The studied system is formed by two magnetic planes (A and B), separated by a number of non-magnetic planes. In fact, the influence of the coupling exchange interactions, the external magnetic field, and the crystal field is investigated and presented as well as the ground-state phase diagrams. Using Monte Carlo simulations, we examine the behavior of the magnetizations and the total magnetization as a function of the values of system parameters. The effect of the RKKY interactions increases for increasing values of the number of non-magnetic planes; for this reason, the studied system becomes disorder when the number of non-magnetic planes increased. When the susceptibility peaks correspond to the reduced critical temperature (T / J (A)), this critical temperature is displaced towards the lower temperatures.