Optoelectronics and defect levels in hydroxyapatite by first-principles

[1 ]Department of Physics and I3N, University of Aveiro, Campus Santiago, 3810-193 Aveiro, Portugal

[2 ]Physics Faculty, Southern Federal University, Zorge Street 5, Rostov-on-Don 344090, Russian Federation

[3 ]Institute of Mathematical Problems of Biology, Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, Vitkevicha Street 1, Pushchino, 142290 Moscow Region, Russian Federation

[4 ]Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-97187 Luleå, Sweden