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

Journal Article · Mon Oct 23 00:00:00 EDT 2017 · Nano Futures

DOI:https://doi.org/10.1088/2399-1984/aa8f39· OSTI ID:1601164

^[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)

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.

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

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

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

OSTI ID:: 1601164

Journal Information:: Nano Futures, Vol. 1, Issue 3; ISSN 2399-1984

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 4 works

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