Title page for etd-0905112-165617


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URN etd-0905112-165617
Author Po-Cheng Huang
Author's Email Address No Public.
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Department Physics
Year 2011
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Scanning tunneling microscopy and spectroscopy investigation of the interfacial electronic properties of
the N-type LaAlO3/TiO2-SrTiO3 hetero-structure
Date of Defense 2012-06-12
Page Count 65
Keyword
  • SrTiO3
  • Scanning tunneling microscopy
  • Scanning tunneling spectroscopy
  • LaAlO3
  • Hetero-structure
  • Abstract In this work, the interfacial electronic property between N-type LaAlO3/TiO2-SrTiO3 has been investigated by using scanning tunneling microscopy and spectroscopy (STM/S). With the consideration of the tip-induced band bending effect during STM measurements and in conjunction with the three-dimensional theoretically analysis, the schematic band structure of the hetero-structured SrTiO3/LaAlO3 is also revealed.
    Results indicate that the magnitude of the built-in field on the LaAlO3 is (30±5) mV/Å. The band bending on SrTiO3 side at the heterointerface is also observed. The band downshift of SrTiO3 side at the interface is 0.31 eV with about 0.8 nm decay length.
    Advisory Committee
  • Mitch. M.C. Chou - chair
  • Yung-Sung Chen - co-chair
  • Ya-Ping Chiu - advisor
  • Files
  • etd-0905112-165617.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2012-09-05

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