Photoemission investigation of the Schottky barrier at the Sc/3C-SiC (111) interface

The Schottky barrier and interfacial chemistry for interfaces formed by evaporation of Sc onto 3C‐SiC (111)‐(1x1) surfaces at 600 °C has been investigated using in situ X‐ray and ultra‐violet photoelectron spectroscopy (XPS and UPS) and low energy electron diffraction (LEED). Sc was observed to grow...

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Veröffentlicht in:Physica Status Solidi. B: Basic Solid State Physics 2015-02, Vol.252 (2), p.391-396
Hauptverfasser: King, Sean W., Nemanich, Robert J., Davis, Robert F.
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container_title Physica Status Solidi. B: Basic Solid State Physics
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creator King, Sean W.
Nemanich, Robert J.
Davis, Robert F.
description The Schottky barrier and interfacial chemistry for interfaces formed by evaporation of Sc onto 3C‐SiC (111)‐(1x1) surfaces at 600 °C has been investigated using in situ X‐ray and ultra‐violet photoelectron spectroscopy (XPS and UPS) and low energy electron diffraction (LEED). Sc was observed to grow in a two‐dimensional manner and exhibit a (1x1) LEED pattern up to thicknesses of ∼2 nm beyond which diffraction patterns were no longer observable. XPS measurements of these same films showed a clear reaction of Sc with the 3C‐SiC (111)‐(1x1) surface to form a ScSix and ScCx interfacial layer in addition to the formation of a metallic Sc film. XPS measurements also showed the deposition of Sc induced ∼0.5 eV of upward band bending resulting in a Schottky barrier of 0.65 ± 0.15 eV.
doi_str_mv 10.1002/pssb.201451340
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Sc was observed to grow in a two‐dimensional manner and exhibit a (1x1) LEED pattern up to thicknesses of ∼2 nm beyond which diffraction patterns were no longer observable. XPS measurements of these same films showed a clear reaction of Sc with the 3C‐SiC (111)‐(1x1) surface to form a ScSix and ScCx interfacial layer in addition to the formation of a metallic Sc film. XPS measurements also showed the deposition of Sc induced ∼0.5 eV of upward band bending resulting in a Schottky barrier of 0.65 ± 0.15 eV.</description><identifier>ISSN: 0370-1972</identifier><identifier>EISSN: 1521-3951</identifier><identifier>DOI: 10.1002/pssb.201451340</identifier><language>eng</language><publisher>Blackwell Publishing Ltd</publisher><subject>Barriers ; Bend tests ; Deposition ; Evaporation ; Scandium ; Schottky barrier ; silicon carbide ; Solid state physics ; UPS ; X-ray photoelectron spectroscopy ; X-rays ; XPS</subject><ispartof>Physica Status Solidi. 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XPS measurements also showed the deposition of Sc induced ∼0.5 eV of upward band bending resulting in a Schottky barrier of 0.65 ± 0.15 eV.</description><subject>Barriers</subject><subject>Bend tests</subject><subject>Deposition</subject><subject>Evaporation</subject><subject>Scandium</subject><subject>Schottky barrier</subject><subject>silicon carbide</subject><subject>Solid state physics</subject><subject>UPS</subject><subject>X-ray photoelectron spectroscopy</subject><subject>X-rays</subject><subject>XPS</subject><issn>0370-1972</issn><issn>1521-3951</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNo9kM1PwkAQxTdGExG9eu4RD4WZ7kfbozSKH6CYYjxutu1WVgrF7qLy31sC4TR5L-83mXmEXCP0ESAYrK3N-gEg40gZnJAO8gB9GnM8JR2gIfgYh8E5ubD2CwBCpNghs-m8drVeGmtNvfLM6kdbZz6V26m69Nxce2neZtxi62WqaYxuPOUO_oAmfmoSr4eINy3sdFOqXF-Ss1JVVl8dZpe839_Nkgd__Dp6TG7Hfk5ZDH6kIcs4LTRVLICcllwwISJVsELkPAeOTJeKs6zIooxipJC1JigeCoGZ5rRLevu966b-3rSHy_aPXFeVWul6YyUKEUdcUMQ2Gu-jv6bSW7luzFI1W4kgd93JXXfy2J2cpunwqFrW37PGOv13ZFWzkCKkIZcfLyM5ieHtefIUyCH9B_H-cxs</recordid><startdate>201502</startdate><enddate>201502</enddate><creator>King, Sean W.</creator><creator>Nemanich, Robert J.</creator><creator>Davis, Robert F.</creator><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>201502</creationdate><title>Photoemission investigation of the Schottky barrier at the Sc/3C-SiC (111) interface</title><author>King, Sean W. ; Nemanich, Robert J. ; Davis, Robert F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3490-8e0bb53de3a420c3f564668ad4d6c5c0514efa54bdb8b318a14c050a57661be53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Barriers</topic><topic>Bend tests</topic><topic>Deposition</topic><topic>Evaporation</topic><topic>Scandium</topic><topic>Schottky barrier</topic><topic>silicon carbide</topic><topic>Solid state physics</topic><topic>UPS</topic><topic>X-ray photoelectron spectroscopy</topic><topic>X-rays</topic><topic>XPS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>King, Sean W.</creatorcontrib><creatorcontrib>Nemanich, Robert J.</creatorcontrib><creatorcontrib>Davis, Robert F.</creatorcontrib><collection>Istex</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physica Status Solidi. 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Sc was observed to grow in a two‐dimensional manner and exhibit a (1x1) LEED pattern up to thicknesses of ∼2 nm beyond which diffraction patterns were no longer observable. XPS measurements of these same films showed a clear reaction of Sc with the 3C‐SiC (111)‐(1x1) surface to form a ScSix and ScCx interfacial layer in addition to the formation of a metallic Sc film. XPS measurements also showed the deposition of Sc induced ∼0.5 eV of upward band bending resulting in a Schottky barrier of 0.65 ± 0.15 eV.</abstract><pub>Blackwell Publishing Ltd</pub><doi>10.1002/pssb.201451340</doi><tpages>6</tpages></addata></record>
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subjects Barriers
Bend tests
Deposition
Evaporation
Scandium
Schottky barrier
silicon carbide
Solid state physics
UPS
X-ray photoelectron spectroscopy
X-rays
XPS
title Photoemission investigation of the Schottky barrier at the Sc/3C-SiC (111) interface
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