Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 문순재 | - |
dc.date.accessioned | 2018-03-15T02:23:42Z | - |
dc.date.available | 2018-03-15T02:23:42Z | - |
dc.date.issued | 2014-08 | - |
dc.identifier.citation | SCIENTIFIC REPORTS, 2014, 4, p1-14 | en_US |
dc.identifier.issn | 0068-1261 | - |
dc.identifier.uri | http://www.nature.com/articles/srep06124 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/46998 | - |
dc.description.abstract | Manipulating the orbital state in a strongly correlated electron system is of fundamental and technological importance for exploring and developing novel electronic phases. Here, we report an unambiguous demonstration of orbital occupancy control between t(2g) and e(g) multiplets in quasi-two-dimensional transition metal oxide superlattices (SLs) composed of a Mott insulator LaCoO3 and a band insulator LaAlO3. As the LaCoO3 sublayer thickness approaches its fundamental limit (i.e. one unit-cell-thick), the electronic state of the SLs changed from a Mott insulator, in which both t(2g) and e(g) orbitals are partially filled, to a band insulator by completely filling (emptying) the t(2g) (e(g)) orbitals. We found the reduction of dimensionality has a profound effect on the electronic structure evolution, which is, whereas, insensitive to the epitaxial strain. The remarkable orbital controllability shown here offers a promising pathway for novel applications such as catalysis and photovoltaics, where the energy of d level is an essential parameter. | en_US |
dc.description.sponsorship | We thank G. A. Sawatzky, B. Keimer, V. Hinkov, S. S. A. Seo, S. H. Chang, and R. Eder for helpful discussions. This work was supported by the Institute for Basic Science (IBS) in Korea (x-ray and optical spectroscopy) and by the U.S. Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division (sample design by pulsed laser epitaxy and theory). | en_US |
dc.language.iso | en | en_US |
dc.publisher | NATURE PUBLISHING GROUP, MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND | en_US |
dc.subject | TRANSITION | en_US |
dc.subject | PRINCIPLES | en_US |
dc.subject | OCCUPANCY | en_US |
dc.subject | INTERFACE | en_US |
dc.subject | LACOO3 | en_US |
dc.title | Dimensionality Control of d-orbital Occupation in Oxide Superlattices | en_US |
dc.type | Article | en_US |
dc.relation.volume | 4 | - |
dc.identifier.doi | 10.1038/srep06124 | - |
dc.relation.page | 1-5 | - |
dc.relation.journal | SCIENTIFIC REPORTS | - |
dc.contributor.googleauthor | Jeong, Da-Woon | - |
dc.contributor.googleauthor | Choi, Woo-Seok | - |
dc.contributor.googleauthor | Okamoto, Satoshi | - |
dc.contributor.googleauthor | Kim, JaeYoung | - |
dc.contributor.googleauthor | Kim, Kyung-Wan | - |
dc.contributor.googleauthor | Moon, Soon-Jae | - |
dc.contributor.googleauthor | Cho, DeokYong | - |
dc.contributor.googleauthor | Lee, Ho-Nyung | - |
dc.contributor.googleauthor | Noh, Tae-Won | - |
dc.relation.code | 2014039257 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF PHYSICS | - |
dc.identifier.pid | soonjmoon | - |
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