Lattice dynamics and phase transition in CrI$_3$ single crystals

S. Djurdjić-Mijin; A. Šolajić; J. Pešić; M. Šćepanović; Y. Liu; A. Baum; C. Petrovic; N. Lazarević; Z. V. Popović

doi:10.1103/PhysRevB.98.104307

Lattice dynamics and phase transition in CrI$_3$ single crystals

Materials Science 2018-09-26 v1

Authors: S. Djurdjić-Mijin , A. Šolajić , J. Pešić , M. Šćepanović , Y. Liu , A. Baum , C. Petrovic , N. Lazarević , Z. V. Popović

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Abstract

The vibrational properties of $\mathrm{CrI_3}$ single crystals were investigated using Raman spectroscopy and were analyzed with respect to the changes of the crystal structure. All but one mode are observed for both the low-temperature $R\bar{3}$ and the high-temperature C2/ $m$ phase. For all observed modes the energies and symmetries are in good agreement with DFT calculations. The symmetry of a single-layer was identified as $p\bar{3}1/m$ . In contrast to previous studies we observe the transition from the $R\bar{3}$ to the $\mathrm{C2}/m$ phase at 180\,K and find no evidence for coexistence of both phases over a wide temperature range.

Keywords

crystal growth and phase transitions ferroelectric crystal growth

Cite

@article{arxiv.1807.03259,
  title  = {Lattice dynamics and phase transition in CrI$_3$ single crystals},
  author = {S. Djurdjić-Mijin and A. Šolajić and J. Pešić and M. Šćepanović and Y. Liu and A. Baum and C. Petrovic and N. Lazarević and Z. V. Popović},
  journal= {arXiv preprint arXiv:1807.03259},
  year   = {2018}
}

Lattice dynamics and phase transition in CrI$_3$ single crystals

Abstract

Keywords

Cite

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