The imprint of laser induced coherent structural dynamics in VO2 on the broad-band reflectivity

Phonons in quantum materials

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We exploit the fact that short pulses of light can be used to induce coherent phonon displacements in quantum materials with large amplitudes. These displacements are macroscopic and significantly larger than can be made through temperature changes. By monitoring how these phonons decay, we can understand the nature of the electron-phonon and phonon-phonon interactions, interactions which are key for understanding materials such as high temperature superconductivity