Tuning electronic reconstructions at the cuprate-manganite interface
C. Schlueter, C. Aruta, N. Yang, A. Tebano, D. Di Castro, G. Balestrino, T. L. Lee
DOI 10.1103/PhysRevMaterials.3.094406 · Physical Review Materials
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Abstract
The electronic properties of CaCuO2/La0.7Sr0.3MnO3 (LSMO) superlattices are determined by the electronic structure of the structural units and in particular their interfaces. The electronic structure of LSMO is governed by a metal-insulator transition, which is controlled by the thickness of the units and the sample temperature, resulting in a systematic downward band shift for metallic samples (i.e., thick LSMO units, low temperature). We present a systematic study of the changes in the valence-band structure and screening features in Mn 2p and Cu 2p core-level spectra. The results show that hybridization of Cu 3d orbitals with out-of-plane O 2p orbitals can be systematically tuned by controlling the band alignment at the interface via the metal-to-insulator transition of the LSMO units. This opens a new route to rational design of functional interfaces and control of orbital reconstructions.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CaCuO2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 50 | Pressure not reported | unknown |
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