Lattice dynamics and phase transitions in Fe$_{3-x}$GeTe$_2$

A. Milosavljević; A. Šolajić; S. Djurdjić-Mijin; J. Pešić; B. Višić; Yu Liu; C. Petrovic; N. Lazarević; Z. V. Popović

doi:10.1103/PhysRevB.99.214304

Lattice dynamics and phase transitions in Fe$_{3-x}$GeTe$_2$

Materials Science 2019-06-18 v1

Authors: A. Milosavljević , A. Šolajić , S. Djurdjić-Mijin , J. Pešić , B. Višić , Yu Liu , C. Petrovic , N. Lazarević , Z. V. Popović

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Abstract

We present Raman spectroscopy measurements of the van der Waals bonded ferromagnet Fe $_{3-x}$ GeTe $_2$ , together with lattice dynamics. Four out of eight Raman active modes are observed and assigned, in agreement with numerical calculations. The energies and line-widths of the observed modes display an unconventional temperature dependence at about 150 K and 220 K, followed by the nonmonotonic evolution of the Raman continuum. Whereas the former can be related to the magnetic phase transition, the origin of the latter anomaly remains an open question.

Keywords

raman spectroscopy phonon crystal growth and phase transitions

Cite

@article{arxiv.1906.07110,
  title  = {Lattice dynamics and phase transitions in Fe$_{3-x}$GeTe$_2$},
  author = {A. Milosavljević and A. Šolajić and S. Djurdjić-Mijin and J. Pešić and B. Višić and Yu Liu and C. Petrovic and N. Lazarević and Z. V. Popović},
  journal= {arXiv preprint arXiv:1906.07110},
  year   = {2019}
}

Lattice dynamics and phase transitions in Fe$_{3-x}$GeTe$_2$

Abstract

Keywords

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