Journal of Electronic Materials

, Volume 47, Issue 7, pp 3615–3621 | Cite as

Electronic Structure, Optical and Transport Properties of Double Perovskite La2NbMnO6: A Theoretical Understanding from DFT Calculations

  • Khursheed Ahmad Parrey
  • Shakeel Ahmad Khandy
  • Ishtihadah Islam
  • Amel Laref
  • Dinesh C. Gupta
  • Asad Niazi
  • Anver Aziz
  • S. G. Ansari
  • R. Khenata
  • Seemin Rubab


Double perovskite La2NbMnO6 was systematically studied using the first-principles calculations. The structural, electronic, optical and transport properties of this compound were calculated. Spin resolved band structure predicted this material as a half-metal with an energy gap of 3.75 eV in spin down state. The optical coefficients including optical conductivity, reflectivity and electron energy loss are calculated for photon energy up to 30.00 eV to understand the optical response of this perovskite. The strong absorption of all the ultraviolet and infrared frequencies of the spectrum by this material may suggest the potential application of this material for the optoelectronic devices in ultraviolet and infra-red region. Also, the thermoelectric properties with a speculation from the half-metallic electronic structure are reported. Subsequently, the Seebeck coefficient, electrical and thermal conductivity coefficients are calculated to predict the thermoelectric figure of merit (zT), the maximum of which is found out to be 0.14 at 800 K.


Double perovskites DFT calculations electronic structure transport and thermodynamic properties 


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One of the authors, A. Laref, wants to acknowledge the “Research Center of Female Scientific and Medical Colleges”, Deanship of Scientific Research, King Saud University for the financial support.


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Copyright information

© The Minerals, Metals & Materials Society 2018

Authors and Affiliations

  • Khursheed Ahmad Parrey
    • 1
  • Shakeel Ahmad Khandy
    • 2
  • Ishtihadah Islam
    • 1
  • Amel Laref
    • 3
  • Dinesh C. Gupta
    • 2
  • Asad Niazi
    • 1
  • Anver Aziz
    • 1
  • S. G. Ansari
    • 4
  • R. Khenata
    • 5
  • Seemin Rubab
    • 6
  1. 1.Department of PhysicsJamia Millia IslamiaNew DelhiIndia
  2. 2.Condensed Matter Theory Group, School of Studies in PhysicsJiwaji UniversityGwaliorIndia
  3. 3.Department of Physics, College of ScienceKing Saud UniversityRiyadhSaudi Arabia
  4. 4.Centre for Interdisciplinary Research in Basic SciencesJamia Millia IslamiaNew DelhiIndia
  5. 5.Department Laboratoire de Physique Quantique de la matire et de Modlisation Mathmatique (LPQ3M)Universit de MascaraMascaraAlgeria
  6. 6.Department of PhysicsNational Institute of TechnologySrinagarIndia

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