304 research outputs found
Substitutional diatomic molecules NO, NC, CO, N2, and O2: Their vibrational frequencies and effects on pdoping of ZnO
Doping by Large-Size-Mismatched Impurities: The Microscopic Origin of Arsenic or Antimony-Doped p-Type Zince Oxide
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Role of point defects in the electrical and optical properties of In2O3
Nearly-free-electron system of monolayer Na on the surface of single-crystal HfSe2
The electronic structure of a single Na monolayer on the surface of single-crystal HfSe2 is investigate dusing angle-resolved photoemission spectroscopy. We find that this system exhibits analmost perfect ânearly-free-electronâ behavior with an extracted effective mass of âž1me, in contrast to heavier masses found previously for alkali metal monolayers on other substrates. Our density functional-theory calculations indicate that this is due to the large lattice constant, causing both exchange and correlation interactions to be suppressed, and to the weak hybridization between the overlayer and the substrate. This is therefore an ideal model system for understanding the properties of two-dimensional materials.PostprintPeer reviewe
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