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

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概要

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• 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.

• American Physical Societyの論文
• 2004-06-30

著者

• Arita R

  Department Of Applied Physics University Of Tokyo:crest Jst

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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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