Vibrational properties of hexagonal boron nitride: inelastic X-ray scattering and ab initio calculations

Phys Rev Lett. 2007 Mar 2;98(9):095503. doi: 10.1103/PhysRevLett.98.095503. Epub 2007 Mar 1.


The phonon dispersion relations of bulk hexagonal boron nitride have been determined from inelastic x-ray scattering measurements and analyzed by ab initio calculations. Experimental data and calculations show an outstanding agreement and reconcile the controversies raised by recent experimental data obtained by electron-energy loss spectroscopy and second-order Raman scattering.