Electronic reconstruction at SrMnO{sub 3}-LaMnO{sub 3} superlattice interfaces.

Journal Article · Thu Nov 01 04:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.99.196404· OSTI ID:1000686

Smadici, S; Abbamonte, P; Bhattacharya, A; Zhai, X; Jiang, B; Rusydi, A; Eckstein, J N; Bader, S D; Zuo, J -M

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 Laboratory (ANL)
• Sponsoring Organization: SC
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1000686
• Report Number(s): ANL/MSD/JA-68694
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: Nov. 2007 Vol. 99; ISSN 0031-9007
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
FERMI LEVEL
FERROMAGNETISM
MAGNETIZATION
PROBES
REFLECTION
SCATTERING
SUPERLATTICES
TITANATES