期刊
APPLIED PHYSICS LETTERS
卷 98, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3549177
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- Netherlands Organization for Scientific Research (NWO)
- NanoNed program
Experimental evidence of differences in the electronic properties of an insulating and a conducting SrTiO3/LaAlO3 interface is provided by soft x-ray spectroscopies. While core level photoemission measurements show that only at the conducting interface Ti ions with 3+ ionization state are present, by using resonant photoemission and x-ray absorption spectroscopies, it is shown that in both samples in-gap states with a Ti 3d character are present, but their density is higher at the conducting interface. (C) 2011 American Institute of Physics. [doi:10.1063/1.3549177]
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