A p-type metallic sheet forms between two oxide insulators, LaAlO3 and SrTiO3. Suppression of oxygen vacancies in SrTiO3 plays a critical role in forming this sheet.
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A termination-insensitive and robust electron gas at the heterointerface of two complex oxides
Nature Communications Open Access 06 September 2019
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Chen, Y., Pryds, N. 2D hole gas seen. Nature Mater 17, 215–216 (2018). https://doi.org/10.1038/s41563-018-0025-5
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DOI: https://doi.org/10.1038/s41563-018-0025-5
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A termination-insensitive and robust electron gas at the heterointerface of two complex oxides
Nature Communications (2019)