Abstract
We synthesized the single crystals of the orthorhombic (space group Pnnm) boron B28 phase in a multi-anvil press and studied them by means of polarized Raman spectroscopy. Among all possible 42 Raman-active modes, we observed and assigned 32.
Acknowledgements
Authors appreciate the help of and discussions with V. Dmitriev, Y. Filinchuk and R. Caracas. This work was supported by a DFG grant within SPP1236.