Tensile-strain induced phonon splitting in diamond

Pu Meifang¹, Zhang Feng¹, Liu Shan¹, Irifune Tetsuo², Lei Li^{1, †}

(a) Dispersion curves for diamond in the (100) and (111) directions and Brillouin zone of cubic diamond. (b) A first-order fingerprint Raman peak at 1332 cm⁻¹ and the Raman vibrational motions F_2g of diamond.