Evidence of spin-phonon coupling in CrSiTe${}_3$

Abstract

We present the Raman scattering results on layered 2D semiconducting ferromagnetic compound CrSiTe${}_3$. Four Raman active modes, predicted by symmetry, have been observed and assigned. The experimental results are supported by DFT calculations. The self-energies of the $A_g^3$ and the $E_g^3$ symmetry modes exhibit unconventional temperature evolution around 180 K. In addition, the doubly degenerate $E_g^3$ mode shows clear change of asymmetry in the same temperature region. The observed behavior is consistent with the presence of the previously reported short-range magnetic order and the strong spin-phonon coupling.

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• Enhanced Magnetization from Proton Irradiated Bulk van der Waals Magnet CrSiTe3
• Short-range Crystalline Order-Tuned Conductivity in Cr${}_2$Si${}_2$Te${}_6$ van der Waals Magnetic Crystals
• Spin-phonon interaction and short range order in $\mathrm{M}{\mathrm{n}}_3\mathrm{S}{\mathrm{i}}_2\mathrm{T}{\mathrm{e}}_6$
• Pressure evolution of electronic structure and magnetism in the layered van der Waals ferromagnet CrGeTe${}_3$
• Manipulating Spin-Lattice Coupling in Layered Magnetic Topological Insulator Heterostructure $via$ Interface Engineering
• Magnon-polaron formation in XXZ quantum Heisenberg chains
• Spontaneously formed phonon frequency combs in van der Waals solid CrXTe${}_3$ (X=Ge,Si)
• Dimension-Dependent Critical Scaling Analysis and Emergent Competing Interaction Scales in a 2D Van der Waals magnet Cr${}_2$Ge${}_2$Te${}_6$
• Probing of magnetic dimensional crossover in CrSiTe${}_3$ through picosecond strain pulses
• Magnetodielectric Properties in Two Dimensional Magnetic Insulators
• Band Splitting and Long-lived Carrier Recombination in Ferromagnetic CrSiTe3 Nanosheets
• Phonon-related monochromatic THz radiation and its magneto-modulation in 2D ferromagnetic Cr2Ge2Te6
• Phonon frequency comb close to an isolated Einstein mode in InSiTe3