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Bulk Dirac points in distorted spinels.
Steinberg, Julia A; Young, Steve M; Zaheer, Saad; Kane, C L; Mele, E J; Rappe, Andrew M.
  • Steinberg JA; The Makineni Theoretical Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA and Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396, USA.
  • Young SM; The Makineni Theoretical Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA.
  • Zaheer S; Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396, USA.
  • Kane CL; Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396, USA.
  • Mele EJ; Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396, USA.
  • Rappe AM; The Makineni Theoretical Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA.
Phys Rev Lett ; 112(3): 036403, 2014 Jan 24.
Article en En | MEDLINE | ID: mdl-24484151
ABSTRACT
We report on a Dirac-like Fermi surface in three-dimensional bulk materials in a distorted spinel structure on the basis of density functional theory as well as tight-binding theory. The four examples we provide in this Letter are BiZnSiO4, BiCaSiO4, BiAlInO4, and BiMgSiO4. A necessary characteristic of these structures is that they contain a Bi lattice which forms a hierarchy of chainlike substructures, with consequences for both fundamental understanding and materials design.
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Banco de datos: MEDLINE Idioma: En Año: 2014 Tipo del documento: Article
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Banco de datos: MEDLINE Idioma: En Año: 2014 Tipo del documento: Article