Mkanya Anele, Pellicane Giuseppe, Pini Davide, Caccamo Carlo
School of Chemistry and Physics, University of Kwazulu-Natal, Private Bag X01, Scottsville 3209, Pietermaritzburg, South Africa.
National Institute for Theoretical Physics (NITheP), KZN node, Pietermaritzburg, South Africa.
J Phys Condens Matter. 2017 Sep 27;29(43). doi: 10.1088/1361-648X/aa86bb.