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Park, Kibog
Emergent Materials & Devices Lab
Research Interests
  • Semiconductor, Metal Oxide Thin Film, Graphene, Non-Volatile Memory, Quantum Transport, Quantum Computing Device

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Valence band structure and band offset of 3C- and 4H-SiC studied by ballistic hole emission microscopy

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Title
Valence band structure and band offset of 3C- and 4H-SiC studied by ballistic hole emission microscopy
Author
Park, KibogDing, Y.Pelz, J. P.Neudeck, P. G.Trunek, A. J.
Keywords
Ballistic hole emission microscopy (BHEM); Band offsets; Crystal fields; Valence band maximum (VBM)
Issue Date
2006-07
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.89, no.4, pp.1 - 3
Abstract
p-type Schottky barriers in Pt/3C-SiC contacts have been measured using ballistic hole emission microscopy (BHEM) and estimated to be ∼0.06 eV higher than identically prepared Pt/p-type 4H-SiC contacts. This indicates the 3C-SiC valence band maximum (VBM) is ∼0.06 eV below the 4H-SiC VBM, consistent with the calculated ∼0.05 eV type-II valence band offset between these polytypes. We also observe no evidence of an additional VBM in 3C-SiC, which supports the proposal that the second VBM observed in BHEM spectra on 4H-SiC is a crystal-field split VBM located ∼110 meV below the highest VBM.
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DOI
10.1063/1.2218302
ISSN
0003-6951
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PHY_Journal Papers
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