Probing anharmonic phonons in WS2 van der Waals crystal by Raman spectroscopy and machine learning

Probing anharmonic phonons in WS2 van der Waals crystal by Raman spectroscopy and machine learning

Blog Article

Summary: Understanding the optothermal physics of quantum materials will enable the efficient design of next-generation photonic and superconducting circuits.Anharmonic phonon dynamics is central to strongly interacting optothermal physics.This is because the pressure of a gas of anharmonic phonons is temperature dependent.Phonon-phonon and electron-phonon modbiv quantum interactions contribute to the anharmonic phonon effect.Here we have studied the optothermal properties of physically exfoliated WS2 van der Waals crystal via temperature-dependent Raman spectroscopy and machine learning strategies.

This fundamental investigation will lead chorulon hcg to unveiling the dependence of temperature on in-plane and out-of-plane Raman shifts (Raman thermometry) of WS2 to study the thermal conductivity, hot copyright diffusion coefficient, and thermal expansion coefficient.