Origin of charge density at LaAlO3-on-SrTiO3 heterointerfacespossibility of intrinsic doping Metadata

Metadata describes a digital item, providing (if known) such information as creator, publisher, contents, size, relationship to other resources, and more. Metadata may also contain "preservation" components that help us to maintain the integrity of digital files over time.

Title

  • Main Title Origin of charge density at LaAlO3-on-SrTiO3 heterointerfacespossibility of intrinsic doping

Creator

  • Author: Siemons, W.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: SLAC National Accelerator Laboratory
    Place of Publication: United States

Date

  • Creation: 2010-04-29

Language

  • English

Description

  • Content Description: As discovered by Ohtomo et al., a large sheet charge density with high mobility exists at the interface between SrTiO{sub 3} and LaAlO{sub 3}. Based on transport, spectroscopic and oxygen-annealing experiments, we conclude that extrinsic defects in the form of oxygen vacancies introduced by the pulsed laser deposition process used by all researchers to date to make these samples is the source of the large carrier densities. Annealing experiments show a limiting carrier density. We also present a model that explains the high mobility based on carrier redistribution due to an increased dielectric constant.

Subject

  • Keyword: Origin
  • Keyword: Carrier Density
  • Keyword: Oxygen
  • Keyword: Matsci
  • Keyword: Annealing
  • Keyword: Deposition
  • Keyword: Vacancies Matsci
  • STI Subject Categories: 71 Classical And Quantum Mechanics, General Physics
  • Keyword: Lasers
  • Keyword: Defects
  • Keyword: Charge Density
  • Keyword: Transport
  • Keyword: Permittivity

Source

  • Journal Name: Submitted to Physical Review Letters

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: SLAC-PUB-13944
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 979045
  • Archival Resource Key: ark:/67531/metadc926390

Note

  • Display Note: http://www.slac.stanford.edu/cgi-wrap/pubpage?slac-pub-13944.html