Highly tunable magnetism in silicene doped with Cr and Fe atoms under isotropic and uniaxial tensile strain

Rui Zheng, Ying Chen, Jun Ni

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We have investigated the magnetic properties of silicene doped with Cr and Fe atoms under isotropic and uniaxial tensile strain by the first-principles calculations. We find that Cr and Fe doped silicenes show strain-tunable magnetism. (1) The magnetism of Cr and Fe doped silicenes exhibits sharp transitions from low spin states to high spin states by a small isotropic tensile strain. Specially for Fe doped silicene, a nearly nonmagnetic state changes to a high magnetic state by a small isotropic tensile strain. (2) The magnetic moments of Fe doped silicene also show a sharp jump to ∼2 μB at a small threshold of the uniaxial strain, and the magnetic moments of Cr doped silicene increase gradually to ∼4 μB with the increase of uniaxial strain. (3) The electronic and magnetic properties of Cr and Fe doped silicenes are sensitive to the magnitude and direction of the external strain. The highly tunable magnetism may be applied in the spintronic devices.

Original languageEnglish
Article number263104
JournalApplied Physics Letters
Volume107
Issue number26
DOIs
Publication statusPublished - 2015 Dec 28

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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