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Polar surface engineering in ultrathin MgO(111)∕Ag(111) : Possibility of a metal-insulator transition and magnetism

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Title: Polar surface engineering in ultrathin MgO(111)∕Ag(111) : Possibility of a metal-insulator transition and magnetism
Authors: Arita, Ryotaro Browse this author
Tanida, Yoshiaki Browse this author
Entani, Shiro Browse this author
Kiguchi, Manabu Browse this author
Saiki, Koichiro Browse this author
Aoki, Hideo Browse this author
Issue Date: 30-Jun-2004
Publisher: American Physical Society
Journal Title: Physical Review B
Volume: 69
Issue: 23
Start Page: 235423
Publisher DOI: 10.1103/PhysRevB.69.235423
Abstract: A recent report [Kiguchi et al., Phys. Rev. B 68, 115402 (2003)] that the (111) surface of 5 MgO layers grown epitaxially on Ag(111) becomes metallic raises a question of what will happen when we have fewer MgO layers. Here we have revealed, first experimentally with electron energy-loss spectroscopy, that MgO(111) remains metallic even when one-layer thick. We have confirmed this theoretically with the density functional theory, where metallization turns out to depend on the nature of the substrate. We finally predict, with a spin-density functional calculation, that a magnetic polar surface can be possible.
Rights: Copyright © 2004 American Physical Society
Relation: http://www.aps.org/
Type: article
URI: http://hdl.handle.net/2115/29773
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 木口 学

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