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

Abstract

The vibrational properties of $\mathrm{Cr}{\mathrm{I}}_3$ 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 $C2/m$ phase at 180\,K and find no evidence for coexistence of both phases over a wide temperature range.

References in corpus (10)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• Controlling magnetism in 2D CrI3 by electrostatic doping
• Robust Intrinsic Ferromagnetism and Half Semiconductivity in Stable Two-Dimensional Single-Layer Chromium Trihalides
• On the origin of magnetic anisotropy in two dimensional CrI${}_3$
• Three-dimensional magnetic critical behavior in CrI${}_3$
• Raman Spectrum of CrI${}_3$: an ab-initio study
• Evidence of phonon-charge-density-waves coupling in ErTe${}_3$
• Insulating and metallic spin glass in K${}_x$Fe${}_{2-\delta -y}$Ni${}_y$Se${}_2$ (0.06 $\le$ $y$ $\le$ 1.44) single crystals
• Sustained phase separation and spin glass in Co-doped K${}_x$Fe${}_{2-y}$Se${}_2$ single crystals

Cited by in corpus (29)

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• Distinct magneto-Raman signatures of spin-flip phase transitions in CrI3
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• Topological magnon insulator spin excitations in the two-dimensional ferromagnet CrBr${}_3$
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• Observation of nonreciprocal magneto-optical scattering in nonencapsulated few-layered CrI3
• Strain and electric-field control of spin-spin interactions in monolayer CrI${}_3$
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• Multiple antiferromagnetic phases and magnetic anisotropy in exfoliated CrBr${}_3$ multilayers
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• Polarization-resolved Raman spectroscopy of α-RuCl3 and evidence of room temperature two-dimensional magnetic scattering
• Phonon-mediated dimensional crossover in bilayer CrI3
• Structural Monoclinicity and Its Coupling to Layered Magnetism in Few-Layer $\mathrm{Cr}{\mathrm{I}}_3$
• Exotic Magnetic and Electronic Properties of Layered CrI3 Single Crystals Under High Pressure
• Magnetism and stability of all primitive stacking patterns in bilayer chromium trihalides
• On-site and inter-site Hubbard corrections in magnetic monolayers: The case of FePS${}_3$ and CrI${}_3$
• Antiferromagnetic-ferromagnetic homostructures with Dirac magnons in van der Waals magnet CrI${}_3$
• Large cross-polarized Raman signal in CrI${}_3$: A first-principles study
• Observation of intrinsic crystal phase in bare CrI3 ferromagnetism
• Electronic structure and magnetism of the Hund insulator CrI3
• Group Theory Analysis of Phonons in Monolayer Chromium Trihalides and Their Janus Structures
• Phonon frequency comb close to an isolated Einstein mode in InSiTe3
• Current-induced CrI3 surface spin-flop transition probed by proximity magnetoresistance in Pt
• Topological properties of multilayer magnon insulators