Paper
23 February 2018 Superconductor sandwiches: cuprate-manganite multilayers with a remarkable new ground state
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Proceedings Volume 10533, Oxide-based Materials and Devices IX; 105330Y (2018) https://doi.org/10.1117/12.2289215
Event: SPIE OPTO, 2018, San Francisco, California, United States
Abstract
A remarkable new electronic ground-state of a high-temperature superconductor oxide (YBa2Cu3O7−δ) is found when it is grown in-between layers of a specific manganite (Pr0.5La0.2Ca0.3MnO3). The superconductor in these ‘superconductor sandwiches’ apparently adopts an exotic granular-state due to an interaction with the manganite. Uniquely, a strong magnetic field recovers a more ‘customary’ superconducting state. Here we show how Raman spectroscopy, state-of-the-art THz ellipsometry, and transport measurements are being used to reveal the nature of this new ground-state. These measurements are shedding light on how the manganite and superconductor layers interact to cause such novel behaviour, however the exact mechanism remains unknown.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
B. P. P. Mallett, P. Marsik, J. Khmaladze, R. Arul, M. Minola, M. C. Simpson, and C. Bernhard "Superconductor sandwiches: cuprate-manganite multilayers with a remarkable new ground state", Proc. SPIE 10533, Oxide-based Materials and Devices IX, 105330Y (23 February 2018); https://doi.org/10.1117/12.2289215
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KEYWORDS
Magnetism

Superconductors

Multilayers

Raman spectroscopy

Manganese

Thin films

Terahertz radiation

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