Nano-engineering of electron correlation in oxide superlattices
- 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.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division; Army Research Office (ARO)
- Grant/Contract Number:
- AC02-05CH11231; FG02-98ER45680
- OSTI ID:
- 1601164
- Journal Information:
- Nano Futures, Journal Name: Nano Futures Journal Issue: 3 Vol. 1; ISSN 2399-1984
- Publisher:
- IOP ScienceCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Transport phenomena in SrVO 3 /SrTiO 3 superlattices
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journal | February 2018 |
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