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Paper   IPM / Physic / 12627
School of Physics
  Title:   Indirect Exchange Interaction between Magnetic Adatoms in Monolayer MoS2
1.  F. Parhizgar
2.  H. Rostami
3.  R. Asgari
  Status:   Published
  Journal: Phys. Rev. B
  Vol.:  87
  Year:  2013
  Pages:   125401
  Supported by:  IPM
We study the Ruderman-Kittle-Kasuya-Yosida (RKKY) interaction in a monolayer MoS2. We show that the rotation of the itinerant electron spin due to the spin-valley coupling causes a twisted interaction between two magnetic adatoms which consists of different RKKY coupling terms, the Hiesenberg, Dzyaloshinsky-Moriya and Ising interactions. We also show that the interaction terms are very sensitive to the Fermi energy values and change dramatically from doped to undoped systems. We show that for a quite dilute electron doping, the Dzyaloshinsky-Moriya interaction always larger than the Hiesenberg interaction. A finite doping causes that all parts of the interaction oscillate with the distance of two magnetic impurities. We explore a beating pattern of oscillations of the RKKY interaction which occurs for the doped system.

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