Reversible Formation of 2D Electron Gas at the LaFeO sub(3)/SrTiO sub(3) Interface via Control of Oxygen Vacancies

A conducting 2D electron gas (2DEG) is formed at the interface between epitaxial LaFeO sub(3) layers >3 unit cells thick and the surface of SrTiO sub(3) single crystals. The 2DEG is exquisitely sensitive to cation intermixing and oxygen nonstoichiometry. It is shown that the latter thus allows th...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2017-03, Vol.29 (10), p.np-np
Main Authors: Xu, Pengfa, Han, Wei, Rice, Philip M, Jeong, Jaewoo, Samant, Mahesh G, Mohseni, Katayoon, Meyerheim, Holger L, Ostanin, Sergey, Maznichenko, Igor V, Mertig, Ingrid, Gross, Eberhard KU, Ernst, Arthur, Parkin, Stuart SP
Format: Article
Language:English
Subjects:
Electron gas
Formations
Gating and risering
Ionic liquids
Oxygen
Strontium titanates
Switches
Vacancies
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Summary:A conducting 2D electron gas (2DEG) is formed at the interface between epitaxial LaFeO sub(3) layers >3 unit cells thick and the surface of SrTiO sub(3) single crystals. The 2DEG is exquisitely sensitive to cation intermixing and oxygen nonstoichiometry. It is shown that the latter thus allows the controllable formation of the 2DEG via ionic liquid gating, thereby forming a nonvolatile switch.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201604447