Energy band structure of the single crystalline MgO/n-Ge(001) heterojunction determined by x-ray photoelectron spectroscopy
- Authors
- Jeon, Kun-Rok; Lee, Sang-Jun; Park, Chang-Yup; Lee, Hun-Sung; Shin, Sung-Chul
- Issue Date
- Sep-2010
- Publisher
- AMER INST PHYSICS
- Keywords
- crystal structure; germanium; magnesium compounds; semiconductor heterojunctions; valence bands; X-ray photoelectron spectra
- Citation
- APPLIED PHYSICS LETTERS, v.97, no.11
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 97
- Number
- 11
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/65076
- DOI
- 10.1063/1.3486116
- ISSN
- 0003-6951
1077-3118
- Abstract
- We report the energy band structure of the single crystalline MgO/n-Ge(001) heterojunction characterized by x-ray photoelectron spectroscopy. The valence band offset of Delta E-V=3.64 +/- 0.07 eV with a 1.49 +/- 0.02 eV band bending was obtained. Given the experimental band gap of MgO (7.83 eV), a type-I band alignment with a conduction band offset of Delta E-C=3.52 +/- 0.07 eV is found. The band alignment of the MgO/n-Ge heterojunction including the large band bending was analyzed by a theoretical model taking into account the formation of the interface dipole. (c) 2010 American Institute of Physics. [doi:10.1063/1.3486116]
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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