Please use this identifier to cite or link to this item: https://doi.org/10.1038/srep18282
DC FieldValue
dc.titleParallel charge sheets of electron liquid and gas in La0.5Sr0.5TiO3/SrTiO3 heterostructures
dc.contributor.authorRenshaw Wang X.
dc.contributor.authorSun L.
dc.contributor.authorHuang Z.
dc.contributor.authorLu W.M.
dc.contributor.authorMotapothula M.
dc.contributor.authorAnnadi A.
dc.contributor.authorLiu Z.Q.
dc.contributor.authorZeng S.W.
dc.contributor.authorVenkatesan T.
dc.contributor.authorAriando
dc.date.accessioned2020-09-08T02:14:25Z
dc.date.available2020-09-08T02:14:25Z
dc.date.issued2015
dc.identifier.citationRenshaw Wang X., Sun L., Huang Z., Lu W.M., Motapothula M., Annadi A., Liu Z.Q., Zeng S.W., Venkatesan T., Ariando (2015). Parallel charge sheets of electron liquid and gas in La0.5Sr0.5TiO3/SrTiO3 heterostructures. Scientific Reports 5 : 18282. ScholarBank@NUS Repository. https://doi.org/10.1038/srep18282
dc.identifier.issn2045-2322
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/174568
dc.description.abstractWe show here a new phenomenon in La0.5Sr0.5TiO3/SrTiO3 (LSTO/STO) heterostructures; that is a coexistence of three-dimensional electron liquid (3DEL) and 2D electron gas (2DEG), separated by an intervening insulating LSTO layer. The two types of carriers were revealed through multi-channel analysis of the evolution of nonlinear Hall effect as a function of film thickness, temperature and back gate voltage. We demonstrate that the 3D electron originates from La doping in LSTO film and the 2D electron at the surface of STO is due to the polar field in the intervening insulating layer. As the film thickness is reduced below a critical thickness of 6 unit cells (uc), an abrupt metal-to-insulator transition (MIT) occurs without an intermediate semiconducting state. The properties of the LSTO layer grown on different substrates suggest that the insulating phase of the intervening layer is a result of interface strain induced by the lattice mismatch between the film and substrate. Further, by fitting the magnetoresistance (MR) curves, the 6 unit cell thick LSTO is shown to exhibit spin-orbital coupling. These observations point to new functionalities, in addition to magnetism and superconductivity in STO-based systems, which could be exploited in a multifunctional context.
dc.sourceUnpaywall 20200831
dc.subjectdoping
dc.subjectmagnetism
dc.subjectorbit
dc.subjectthickness
dc.typeArticle
dc.contributor.departmentDEPT OF ELECTRICAL & COMPUTER ENGG
dc.contributor.departmentDEPT OF MATERIALS SCIENCE & ENGINEERING
dc.contributor.departmentDEPT OF PHYSICS
dc.contributor.departmentNUS NANOSCIENCE & NANOTECH INITIATIVE
dc.description.doi10.1038/srep18282
dc.description.sourcetitleScientific Reports
dc.description.volume5
dc.description.page18282
dc.published.statePublished
Appears in Collections:Staff Publications
Elements

Show simple item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_1038_srep18282.pdf2.4 MBAdobe PDF

OPEN

PublishedView/Download

SCOPUSTM   
Citations

8
checked on Nov 18, 2020

Page view(s)

27
checked on Nov 20, 2020

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.