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Updated: Jul 31, 2025
05:39
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
9.7K
Superconductivity at Interfaces in Cuprate-Manganite Superlattices.
Nicolas Bonmassar1, Georg Christiani1, Tobias Heil1
1Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569, Stuttgart, Germany.
Summary
This study shows high-temperature superconducting La1.84 Sr0.16 CuO4 interfaces with SrLaMnO4 are atomically sharp. This is crucial for spintronic applications and understanding oxide material properties.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Solid State Chemistry
Background:
- High-temperature superconducting cuprates face challenges in spintronic applications due to short Cooper pair coherence lengths.
- Atomically sharp and defect-free interfaces are essential for utilizing these materials.
Purpose of the Study:
- To demonstrate high-temperature superconductivity in La1.84 Sr0.16 CuO4 near SrLaMnO4.
- To provide evidence for atomic-scale interface sharpness between cuprate and manganite layers.
- To investigate the impact of interfacial chemical potential on superconductivity.
Main Methods:
- Fabrication of ultrathin oxide layers with K2 NiF4 -type structure.
- Atomic-scale interface characterization.
- Proximity effect studies in layered oxide heterostructures.
Main Results:
- Demonstrated high-temperature superconductivity in La1.84 Sr0.16 CuO4 in proximity to SrLaMnO4.
- Confirmed atomic-scale sharpness of the cuprate-manganite interface.
- Showcased high stability of ultrathin Sr2-x Lax MnO4 (1 unit cell) and La1.84 Sr0.16 CuO4 (3 unit cells) layers.
Conclusions:
- The study advances fundamental understanding of interfacial effects in superconducting cuprate-manganite systems.
- Findings highlight the potential of oxide-based materials for quantum computing applications.
- Precisely engineered interfaces are key for exploiting exotic quantum phenomena in heterostructures.
Keywords:
Jahn-Teller effectchemical potentialelectron energy loss spectroscopymolecular beam epitaxyscanning transmission electron microscopysuperconductivityultrathin filmsMore Related Videos
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