Fig. 2: Effects of boron doping on the vibrational properties of diamond.
a Micro Raman spectra obtained from BDD and undoped diamond (left) showing the ZCP at ca. 1332 cm−1. The spectrum for BDD has an asymmetric Fano lineshape (right) caused by the interference of the ZCP with electronic states created by hole doping which can be modeled as an electronic continuum (EC) that, along with phononic contributions, gives rise to this characteristic lineshape (Supplementary Note 2). b First-principles calculation of the phonon density-of-states (PDoS) of BDD for an equivalent boron concentration of ~2300 ppm, and intrinsic diamond.
