Controlled Two-Dimensional Ferromagnetism in 1T–CrTe2: The Role of Charge Density Wave and Strain

  title={Controlled Two-Dimensional Ferromagnetism in 1T–CrTe2: The Role of Charge Density Wave and Strain},
  author={Adolfo Otero Fumega and Janice Paige Phillips and Victor Pardo},
  journal={arXiv: Materials Science},
Transition metal dichalcogenides are promising candidates to show long-range ferromagnetic order in the single-layer limit. Based on ab initio calculations, we report the emergence of a charge density wave (CDW) phase in monolayer 1T-CrTe$_2$. We demonstrate that this phase is the ground state in the single-layer limit at any strain value. We obtain an optical phonon mode of $1.96$ THz that connects CDW phase with the undistorted 1T phase. Localization of the $a_{1g}$ orbital of CrTe$_2… 
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