Nano-engineering of electron correlation in oxide superlattices

Laverock, J.; Gu, M.; Jovic, V.; Lu, J. W.; Wolf, S. A.; Qiao, R. M.; Yang, W.; Smith, K. E.

doi:10.1088/2399-1984/aa8f39

Title: Nano-engineering of electron correlation in oxide superlattices

Abstract

Oxide heterostructures and superlattices (SLs) have attracted a great deal of attention in recent years owing to the rich exotic properties encountered at their interfaces. We focus on the potential of tunable correlated oxides by investigating the spectral function of the prototypical correlated metal SrVO3 , using soft x-ray absorption spectroscopy and resonant inelastic soft x-ray scattering to access both unoccupied and occupied electronic states, respectively. We demonstrate a remarkable level of tunability in the spectral function of SrVO₃ by varying its thickness within the SrVO₃/SrTiO₃ SL, showing that the effects of electron correlation can be tuned from dominating the energy spectrum in a strongly correlated Mott–Hubbard insulator, towards a correlated metal. We show that the effects of dimensionality on the correlated properties of SrVO₃ are augmented by interlayer coupling, yielding a highly flexible correlated oxide that may be readily married with other oxide systems.

Authors:

^[1];

^[2]; Jovic, V. ^[3]; Lu, J. W. ^[2]; Wolf, S. A. ^[2]; Qiao, R. M. ^[4]; Yang, W. ^[4]; Smith, K. E. ^[5]

Boston Univ., MA (United States); Univ. of Bristol, Tyndall Avenue, Bristol (United Kingdom)
Univ. of Virginia, Charlottesville, VA (United States)
Univ. of of Auckland, Auckland (New Zealand)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Boston Univ., MA (United States); Univ. of of Auckland, Auckland (New Zealand)

Publication Date:: 2017-10-23

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; Army Research Office (ARO)

OSTI Identifier:: 1601164

Grant/Contract Number:: AC02-05CH11231; FG02-98ER45680; W911-NF-09-1-0398

Resource Type:: Accepted Manuscript

Journal Name:: Nano Futures

Additional Journal Information:: Journal Volume: 1; Journal Issue: 3; Journal ID: ISSN 2399-1984

Publisher:: IOP Science

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats


                    Laverock, J., Gu, M., Jovic, V., Lu, J. W., Wolf, S. A., Qiao, R. M., Yang, W., and Smith, K. E.. Nano-engineering of electron correlation in oxide superlattices.  United States: N. p., 2017. 
Web.  https://doi.org/10.1088/2399-1984/aa8f39.

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                    Laverock, J., Gu, M., Jovic, V., Lu, J. W., Wolf, S. A., Qiao, R. M., Yang, W., & Smith, K. E.. Nano-engineering of electron correlation in oxide superlattices.  United States.  https://doi.org/10.1088/2399-1984/aa8f39

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                    Laverock, J., Gu, M., Jovic, V., Lu, J. W., Wolf, S. A., Qiao, R. M., Yang, W., and Smith, K. E.. Mon .  
"Nano-engineering of electron correlation in oxide superlattices".  United States.  https://doi.org/10.1088/2399-1984/aa8f39.  https://www.osti.gov/servlets/purl/1601164.

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@article{osti_1601164,

  title        = {Nano-engineering of electron correlation in oxide superlattices},

  author       = {Laverock, J. and Gu, M. and Jovic, V. and Lu, J. W. and Wolf, S. A. and Qiao, R. M. and Yang, W. and Smith, K. E.},

  abstractNote = {Oxide heterostructures and superlattices (SLs) have attracted a great deal of attention in recent years owing to the rich exotic properties encountered at their interfaces. We focus on the potential of tunable correlated oxides by investigating the spectral function of the prototypical correlated metal SrVO3 , using soft x-ray absorption spectroscopy and resonant inelastic soft x-ray scattering to access both unoccupied and occupied electronic states, respectively. We demonstrate a remarkable level of tunability in the spectral function of SrVO3 by varying its thickness within the SrVO3/SrTiO3 SL, showing that the effects of electron correlation can be tuned from dominating the energy spectrum in a strongly correlated Mott–Hubbard insulator, towards a correlated metal. We show that the effects of dimensionality on the correlated properties of SrVO3 are augmented by interlayer coupling, yielding a highly flexible correlated oxide that may be readily married with other oxide systems.},

  doi          = {10.1088/2399-1984/aa8f39},

  journal      = {Nano Futures},

  number       = 3,

  volume       = 1,

  place        = {United States},

  year         = {2017},

  month        = {10}

}

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Works referencing / citing this record:

Transport phenomena in SrVO ₃ /SrTiO ₃ superlattices
journal, February 2018

Gu, Man; Wolf, Stuart A.; Lu, Jiwei
Journal of Physics D: Applied Physics, Vol. 51, Issue 10
DOI: 10.1088/1361-6463/aaabac

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Title: Nano-engineering of electron correlation in oxide superlattices

Abstract

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Electron confinement, orbital ordering, and orbital moments in d 0 − d 1 oxide heterostructures journal, June 2010

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Comparative study of correlation effects in Ca V O 3 and Sr V O 3 journal, October 2005

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Colloquium : Emergent properties in plane view: Strong correlations at oxide interfaces journal, October 2014

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Electronics with Correlated Oxides: SrVO 3 / SrTiO 3 as a Mott Transistor journal, June 2015

Spin excitations in a single La2CuO4 layer journal, September 2012

Metallic Quantum Well States in Artificial Structures of Strongly Correlated Oxide journal, July 2011

Mass renormalization in the bandwidth-controlled Mott-Hubbard systems SrVO 3 and CaVO 3 studied by angle-resolved photoemission spectroscopy journal, August 2010

Localized and delocalized Ti 3 d carriers in LaAlO 3 /SrTiO 3 superlattices revealed by resonant inelastic x-ray scattering journal, May 2011

Electronic structure of SrVO 3 ( 001 ) surfaces: A local-density approximation plus dynamical mean-field theory calculation journal, June 2006

Oxygen 1 s x-ray-absorption edges of transition-metal oxides journal, September 1989

Artificial charge-modulationin atomic-scale perovskite titanate superlattices journal, September 2002

Enhanced electron correlations at the Sr x Ca 1 − x VO 3 surface journal, April 2015

Dimensional crossover in ultrathin buried conducting SrVO 3 layers journal, January 2015

Dimensional-Crossover-Driven Metal-Insulator Transition in SrVO 3 Ultrathin Films journal, April 2010

Orbital Reconstruction and the Two-Dimensional Electron Gas at the LaAlO3/SrTiO3 Interface journal, April 2009

Highly Conductive SrVO 3 as a Bottom Electrode for Functional Perovskite Oxides journal, May 2013

Metal-insulator transition induced in CaVO 3 thin films journal, April 2013

Determination of absorption coefficients for concentrated samples by fluorescence detection journal, June 1993

Electron Correlation and Charge Transfer in [ ( Ba 0.9 Nd 0.1 ) CuO 2 + δ ] 2 / [ CaCuO 2 ] 2 Superconducting Superlattices journal, January 2006

Electronic reconstruction at an interface between a Mott insulator and a band insulator journal, April 2004

Parameters that control pulsed electron beam ablation of materials and film deposition processes journal, February 2003

Smoothing and Differentiation of Data by Simplified Least Squares Procedures. journal, July 1964

Transport phenomena in SrVO 3 /SrTiO 3 superlattices journal, February 2018

Resonant Soft-X-Ray Emission as a Bulk Probe of Correlated Electron Behavior in Metallic ${Sr}_{x} {Ca}_{1 - x} {VO}_{3}$
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Spectroscopic Evidence for Competing Reconstructions in Polar Multilayers ${LaAlO}_{3} / {LaVO}_{3} / {LaAlO}_{3}$
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Titanium dx y ferromagnetism at the LaAlO3/SrTiO3 interface
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Two-Dimensional Mott Insulators in SrVO ₃ Ultrathin Films
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Electrical properties of SrVO3/SrTiO3 superlattices grown by laser molecular beam epitaxy
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Metal-insulator transitions
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Fabrication and anomalous conducting behavior of atomically regulated superlattices
journal, October 1991

Resonant inelastic x-ray scattering studies of elementary excitations
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Electron confinement, orbital ordering, and orbital moments in $d^{0} − d^{1}$ oxide heterostructures
journal, June 2010

Hubbard band versus oxygen vacancy states in the correlated electron metal ${SrVO}_{3}$
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Metal-insulator transition in SrTi ₁₋ _x V _x O ₃ thin films
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Emergent phenomena at oxide interfaces
journal, January 2012

Effect of polar discontinuity on the growth of LaNiO3/LaAlO3 superlattices
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Resonant inelastic x-ray scattering spectra for electrons in solids
journal, February 2001

Colloquium : Emergent properties in plane view: Strong correlations at oxide interfaces
journal, October 2014

A high-mobility electron gas at the LaAlO3/SrTiO3 heterointerface
journal, January 2004

Resonant C Kα X-ray emission of some carbon allotropes and organic compounds
journal, October 2000

Electronic structure calculations with dynamical mean-field theory
journal, August 2006

Superconducting Interfaces Between Insulating Oxides
journal, August 2007

Orbital Reconstruction and Covalent Bonding at an Oxide Interface
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Electronics with Correlated Oxides: ${SrVO}_{3} / {SrTiO}_{3}$ as a Mott Transistor
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Spin excitations in a single La2CuO4 layer
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Metallic Quantum Well States in Artificial Structures of Strongly Correlated Oxide
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Mass renormalization in the bandwidth-controlled Mott-Hubbard systems ${SrVO}_{3}$ and ${CaVO}_{3}$ studied by angle-resolved photoemission spectroscopy
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Localized and delocalized Ti 3 $d$ carriers in LaAlO $_{3}$ /SrTiO $_{3}$ superlattices revealed by resonant inelastic x-ray scattering
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Electronic structure of ${SrVO}_{3} (001)$ surfaces: A local-density approximation plus dynamical mean-field theory calculation
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Oxygen 1 s x-ray-absorption edges of transition-metal oxides
journal, September 1989

Artificial charge-modulationin atomic-scale perovskite titanate superlattices
journal, September 2002

Enhanced electron correlations at the ${Sr}_{x} {Ca}_{1 - x} {VO}_{3}$ surface
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Dimensional crossover in ultrathin buried conducting ${SrVO}_{3}$ layers
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Highly Conductive SrVO ₃ as a Bottom Electrode for Functional Perovskite Oxides
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Determination of absorption coefficients for concentrated samples by fluorescence detection
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Electron Correlation and Charge Transfer in $[({Ba}_{0.9} {Nd}_{0.1}) {CuO}_{2 + δ}]_{2} / [{CaCuO}_{2}]_{2}$ Superconducting Superlattices
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Electronic reconstruction at an interface between a Mott insulator and a band insulator
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Parameters that control pulsed electron beam ablation of materials and film deposition processes
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Smoothing and Differentiation of Data by Simplified Least Squares Procedures.
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