Tailoring LaAlO3/SrTiO3 Interface Metallicity by Oxygen Surface Adsorbates
We report an oxygen surface adsorbates induced metal–insulator transition at the LaAlO3/SrTiO3 interfaces. The observed effects were attributed to the terminations of surface Al sites and the resultant electron-accepting surface states. By controlling the local oxygen adsorptions, we successfully de...
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Published in | Nano letters Vol. 16; no. 4; pp. 2739 - 2743 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
American Chemical Society
13.04.2016
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Subjects | |
Online Access | Get full text |
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Summary: | We report an oxygen surface adsorbates induced metal–insulator transition at the LaAlO3/SrTiO3 interfaces. The observed effects were attributed to the terminations of surface Al sites and the resultant electron-accepting surface states. By controlling the local oxygen adsorptions, we successfully demonstrated the nondestructive patterning of the interface two-dimensional electron gas (2DEG). The obtained 2DEG structures are stable in air and also robust against general solvent treatments. This study provides new insights into the metal–insulator transition mechanism at the complex oxide interfaces and also a highly efficient technique for tailoring the interface properties. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 USDOE Office of Science (SC), Basic Energy Sciences (BES) SC0010399 |
ISSN: | 1530-6984 1530-6992 |
DOI: | 10.1021/acs.nanolett.6b00421 |