Large bandgap and optical response of d double perovskite Ba2ScTaO6

Large bandgap and optical response of d double perovskite Ba2ScTaO6 A. K. Himanshu, 2, ∗ Sujit Kumar, Urmimala Dey, 5 and Rajyavardhan Ray 7, † Variable Energy Cyclotron Center (VECC), DAE, 1/AF Bidhannagar, Kolkata, India 700064 Homi Bhabha National Institute, Mumbai, India 400094 Department of Physics, Magadh University, Bodh Gaya,India 824234 Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur ,India 721302 Department of Physics, Durham University, South Road, Durham DH1 3LE, UK Leibniz IFW Dresden, Helmholtzstr. 20, 01069 Dresden, Germany Dresden Center for Computational Materials Science (DCMS), TU Dresden, D-01062, Germany (Dated: November 5, 2021)