THz pump-probe data in doped SrTiO3 show an increasing energy relaxation rate up to 50K, used to argue against two-phonon scattering, but the phonon energy is around 100K, so the argument is not supported.
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Absence of two-phonon quasi-elastic scattering in the normal state of doped--SrTiO$_3$ by THz pump-probe spectroscopy
THz pump-probe data in doped SrTiO3 show an increasing energy relaxation rate up to 50K, used to argue against two-phonon scattering, but the phonon energy is around 100K, so the argument is not supported.