Origin of Metallic States at Heterointerface between Band Insulators LaAlO$_3$ and SrTiO$_3$

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dc.creatorYoshimatsu, K.
dc.creatorYasuhara, R.
dc.creatorKumigashira, H.
dc.creatorOshima, M.
dc.date2008-05-21
dc.date.accessioned2026-07-07T09:53:38Z
dc.date.available2026-07-07T09:53:38Z
dc.descriptionWe have studied the electronic structure at the heterointerface between the band insulators LaAlO$_3$ and SrTiO$_3$ using $in situ$ photoemission spectroscopy. Our experimental results clearly reveal the formation of a notched structure on the SrTiO$_3$ side due to band bending at the metallic LaAlO$_3$/TiO$_2$-SrTiO$_3$ interface. The structure, however, is absent at the insulating LaAlO$_3$/SrO-SrTiO$_3$ interface. The present results indicate that the metallic states originate not from the charge transfer through the interface on a short-range scale but from the accumulation of carriers on a long-range scale.
dc.description20 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0805.3223
dc.identifierhttp://arxiv.org/abs/0805.3223
dc.identifierPhys. Rev. Lett. 101, 026802 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.026802
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/166027
dc.subjectMaterials Science
dc.titleOrigin of Metallic States at Heterointerface between Band Insulators LaAlO$_3$ and SrTiO$_3$
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