Identification of surface oxygen vacancy-related phonon–plasmon coupling in TiO<sub>2</sub> single crystal

Identification of surface oxygen vacancy-related phonon–plasmon coupling in TiO₂ single crystal

Guo Jun-Hong¹, Li Ting-Hui², Hu Fang-Ren^{1, †,}, Liu Li-Zhe^{3, ‡,}

(a) XPS spectra from samples A and B, and (b) larger image of the Ti 2p_3/2 spectra, (c) PL spectra from samples A and B, (d) EPR spectra of sample A. The unit 1 Gs = 10⁻⁴ T.