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      Absence of metallicity in Cs-GaAs(110): A Hubbard-model study

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      Author(s)
      Gedik, Z.
      Çıracı, Salim
      Batra, I. P.
      Date
      1993
      Source Title
      Physical Review B
      Print ISSN
      0163-1829
      Publisher
      American Physical Society
      Volume
      47
      Issue
      24
      Pages
      16391 - 16394
      Language
      English
      Type
      Article
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      Abstract
      Using an approximate solution of the Hubbard-model Hamiltonian, we are able to establish that the Cs-GaAs(110) system becomes a Mott insulator at submonolayer Cs coverages. We also provide a consistent interpretation of electron-energy-loss and scanning-tunneling-spectroscopies data. The correlation effects are important for this system with an estimated correlation energy of 0.4 eV. © 1993 The American Physical Society.
      Permalink
      http://hdl.handle.net/11693/26071
      Published Version (Please cite this version)
      http://dx.doi.org/10.1103/PhysRevB.47.16391
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