Anisotropic electrical transport properties of a two-dimensional electron gas at SrTiO3-LaAlO3 interfaces

Brinks, Peter; Siemons, Wolter; Kleibeuker, Josee; Koster, Gertjan; Rijnders, Guus; Huijben, Mark

doi:10.1063/1.3600339

Title: Anisotropic electrical transport properties of a two-dimensional electron gas at SrTiO3-LaAlO3 interfaces

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Abstract

Experimental evidence of strong in-plane anisotropy in electrical properties of the confined electron gas at the SrTiO{sub 3}-LaAlO{sub 3} interface on top of (LaAlO{sub 3}){sub 0.3}(Sr{sub 2}AlTaO{sub 3}){sub 0.7} substrates is provided by detailed transport measurements. Structured measurement geometries in multiple directions are used to show dependence of the sheet resistance with the in-plane angle {theta}, which is fitted with a sine function with a period of 180{sup o}. The carrier density remains constant and a directional dependence of the carrier mobility of more than one order of magnitude is determined with respect to the orientation of the unit cell height steps present at the SrTiO{sub 3}-LaAlO{sub 3} interface.

Authors:

Brinks, Peter ^[1]; Siemons, Wolter ^[2]; Kleibeuker, Josee ^[1]; Koster, Gertjan ^[1]; Rijnders, Guus ^[3]; Huijben, Mark ^[1]

University of Twente, Enschede, Netherlands
ORNL
MESA+ University of Twente, Enschede, Netherlands

Publication Date:: Sat Jan 01 00:00:00 EST 2011

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1017340

DOE Contract Number:: DE-AC05-00OR22725

Resource Type:: Journal Article

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Volume: 98; Journal Issue: 24; Journal ID: ISSN 0003-6951

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; CARRIER DENSITY; CARRIER MOBILITY; ELECTRICAL PROPERTIES; ELECTRON GAS; ORIENTATION; SUBSTRATES; TRANSPORT

Citation Formats


                    Brinks, Peter, Siemons, Wolter, Kleibeuker, Josee, Koster, Gertjan, Rijnders, Guus, and Huijben, Mark. Anisotropic electrical transport properties of a two-dimensional electron gas at SrTiO3-LaAlO3 interfaces.  United States: N. p., 2011. 
        Web.  doi:10.1063/1.3600339.

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                    Brinks, Peter, Siemons, Wolter, Kleibeuker, Josee, Koster, Gertjan, Rijnders, Guus, & Huijben, Mark. Anisotropic electrical transport properties of a two-dimensional electron gas at SrTiO3-LaAlO3 interfaces.  United States.  https://doi.org/10.1063/1.3600339

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                    Brinks, Peter, Siemons, Wolter, Kleibeuker, Josee, Koster, Gertjan, Rijnders, Guus, and Huijben, Mark. 2011.  
        "Anisotropic electrical transport properties of a two-dimensional electron gas at SrTiO3-LaAlO3 interfaces".  United States.  https://doi.org/10.1063/1.3600339.

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@article{osti_1017340,

  title        = {Anisotropic electrical transport properties of a two-dimensional electron gas at SrTiO3-LaAlO3 interfaces},

  author       = {Brinks, Peter and Siemons, Wolter and Kleibeuker, Josee and Koster, Gertjan and Rijnders, Guus and Huijben, Mark},

  abstractNote = {Experimental evidence of strong in-plane anisotropy in electrical properties of the confined electron gas at the SrTiO{sub 3}-LaAlO{sub 3} interface on top of (LaAlO{sub 3}){sub 0.3}(Sr{sub 2}AlTaO{sub 3}){sub 0.7} substrates is provided by detailed transport measurements. Structured measurement geometries in multiple directions are used to show dependence of the sheet resistance with the in-plane angle {theta}, which is fitted with a sine function with a period of 180{sup o}. The carrier density remains constant and a directional dependence of the carrier mobility of more than one order of magnitude is determined with respect to the orientation of the unit cell height steps present at the SrTiO{sub 3}-LaAlO{sub 3} interface.},

  doi          = {10.1063/1.3600339},

  url          = {https://www.osti.gov/biblio/1017340},
  journal      = {Applied Physics Letters},

  issn         = {0003-6951},

  number       = 24,

  volume       = 98,

  place        = {United States},

  year         = {Sat Jan 01 00:00:00 EST 2011},

  month        = {Sat Jan 01 00:00:00 EST 2011}

}

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