Show simple item record

dc.contributor.authorLi, Yangyang
dc.contributor.authorWang, Qingxiao
dc.contributor.authorAn, Ming
dc.contributor.authorLi, Kun
dc.contributor.authorWehbe, Nimer
dc.contributor.authorZhang, Qiang
dc.contributor.authorDong, Shuai
dc.contributor.authorWu, Tao
dc.date.accessioned2016-11-03T13:21:17Z
dc.date.available2016-11-03T13:21:17Z
dc.date.issued2016-06-27
dc.identifier.citationLi Y, Wang Q, An M, Li K, Wehbe N, et al. (2016) Nanoscale Chemical and Valence Evolution at the Metal/Oxide Interface: A Case Study of Ti/SrTiO 3 . Advanced Materials Interfaces 3: 1600201. Available: http://dx.doi.org/10.1002/admi.201600201.
dc.identifier.issn2196-7350
dc.identifier.doi10.1002/admi.201600201
dc.identifier.urihttp://hdl.handle.net/10754/621627
dc.description.abstractMetal/oxide interfaces are ubiquitous in a wide range of applications such as electronics, photovoltaics, memories, catalysis, and sensors. However, there have been few investigations dedicated to the nanoscale structural and chemical characteristics of these buried interfaces. In this work, the metal/oxide interface between Ti and SrTiO3 (STO) is examined as a prototypical system using high-resolution scanning transmission electron microscopy and electron energy loss spectroscopy. An atomic-thin Ti2O3-like layer at the Ti/STO interface prepared at room temperature is discovered, and first-principles calculations predict a metallic band structure of this 2D electron system. As a universal feature of such interfaces prepared at different temperatures, near the interface nanoscale oxygen-deficient domains and continuous modulation of Ti oxidation states are found. Overall, these results directly reveal complex chemical and valence evolutions at the metal/oxide interfaces, providing microscopic insights on such heterostructures. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
dc.description.sponsorshipThis work was supported by the King Abdullah University of Science and Technology (KAUST). M.A. and S.D. were supported by the National Natural Science Foundation (Grant No. 11274060). The experiments were performed in the Nanofabrication & Thin Film core lab, and the Imaging & Characterization Core Lab in KAUST.
dc.publisherWiley
dc.subjectelectron energy loss spectrum
dc.subjectfirst-principles calculation
dc.subjectinterfaces
dc.subjectoxygen vacancies
dc.subjectSrTiO 3
dc.titleNanoscale Chemical and Valence Evolution at the Metal/Oxide Interface: A Case Study of Ti/SrTiO 3
dc.typeArticle
dc.contributor.departmentImaging and Characterization Core Lab
dc.contributor.departmentLaboratory of Nano Oxides for Sustainable Energy
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentNanofabrication Core Lab
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSurface Science
dc.contributor.departmentThin Films & Characterization
dc.identifier.journalAdvanced Materials Interfaces
dc.contributor.institutionDepartment of Materials Science and Engineering; University of Texas at Dallas; 800 W. Campbell Rd. RL10 Richardson TX 75080 USA
dc.contributor.institutionDepartment of Physics; Southeast University; Nanjing 211189 China
kaust.personLi, Yangyang
kaust.personLi, Kun
kaust.personWehbe, Nimer
kaust.personZhang, Qiang
kaust.personWu, Tao
kaust.acknowledged.supportUnitCore Labs
kaust.acknowledged.supportUnitImaging & Characterization Laboratory
kaust.acknowledged.supportUnitNanofabrication & Thin Film core lab
dc.date.published-online2016-06-27
dc.date.published-print2016-09


This item appears in the following Collection(s)

Show simple item record