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  Layer-by-Layer Evolution of a Two-Dimensional Electron Gas Near an Oxide Interface

Chang, J. Y., Moreschini, L., Bostwick, A., Gaines, G. A., Kim, Y. S., Walter, A. L., et al. (2013). Layer-by-Layer Evolution of a Two-Dimensional Electron Gas Near an Oxide Interface. Physical Review Letters, 111(12): 126401. doi:10.1103/PhysRevLett.111.126401.

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e126401.pdf (Publisher version), 3MB
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 Creators:
Chang, Jun Young1, 2, 3, Author           
Moreschini, Luca1, Author
Bostwick, Aaron1, Author
Gaines, Geoffrey A.1, Author
Kim, Yong Su1, Author
Walter, Andrew L.1, 3, Author           
Freelon, Byron1, Author
Tebano, Antonello4, Author
Horn, Karsten3, Author           
Rotenberg, Eli1, Author
Affiliations:
1Advanced Light Source (ALS), E. O. Lawrence Berkeley National Laboratory, Berkeley, California, ou_persistent22              
2Department of Physics, University of Seoul, ou_persistent22              
3Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
4CNR-SPIN and Department of Civil Engineering and Computer Science Engineering, University of Roma Tor Vergata, ou_persistent22              

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 Abstract: We report the momentum-resolved measurement of a two-dimensional electron gas at the LaTiO3/SrTiO3 interface by angle-resolved photoemission spectroscopy (ARPES). Thanks to an advanced sample preparation technique, the orbital character of the conduction electrons and the electronic correlations can be accessed quantitatively as each unit cell layer is added. We find that all of these quantities change dramatically with distance from the interface. These findings open the way to analogous studies on other heterostructures, which are traditionally a forbidden field for ARPES.

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Language(s): eng - English
 Dates: 2013-05-292013-09-182013-09-20
 Publication Status: Published in print
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 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.111.126401
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Title: Physical Review Letters
Source Genre: Journal
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Publ. Info: Woodbury, N.Y., etc. : American Physical Society.
Pages: - Volume / Issue: 111 (12) Sequence Number: 126401 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1