Electronic reconstruction at SrMnO{sub 3}-LaMnO{sub 3} superlattice interfaces.
We use resonant soft-x-ray scattering (RSXS) to study the electronic reconstruction at the interface between the Mott insulator LaMnO{sub 3} and the band insulator SrMnO{sub 3}. Superlattices of these two insulators were shown previously to have both ferromagnetism and metallic tendencies [Koida et al., Phys. Rev. B 66, 144418 (2002)]. By studying a judiciously chosen superlattice reflection, we show that the interface density of states exhibits a pronounced peak at the Fermi level, similar to that predicted in related titanate superlattices by Okamoto et al. [Phys. Rev. B 70, 241104(R) (2004)]. The intensity of this peak correlates with the conductivity and magnetization, suggesting it is the driver of metallic behavior. Our study demonstrates a general strategy for using RSXS to probe the electronic properties of heterostructure interfaces.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1000686
- Report Number(s):
- ANL/MSD/JA-68694; TRN: US201101%%467
- Journal Information:
- Physical Review Letters, Vol. 99, Issue Nov. 2007
- Country of Publication:
- United States
- Language:
- ENGLISH
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