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Proceedings Paper

Superconductor sandwiches: cuprate-manganite multilayers with a remarkable new ground state
Author(s): B. P. P. Mallett; P. Marsik; J. Khmaladze; R. Arul; M. Minola; M. C. Simpson; C. Bernhard
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Paper 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.

Paper Details

Date Published: 23 February 2018
PDF: 8 pages
Proc. SPIE 10533, Oxide-based Materials and Devices IX, 105330Y (23 February 2018);
Show Author Affiliations
B. P. P. Mallett, Univ. of Auckland (New Zealand)
P. Marsik, Univ. de Fribourg (Switzerland)
J. Khmaladze, Univ. de Fribourg (Switzerland)
R. Arul, Univ. of Auckland (New Zealand)
Dodd Walls Ctr. for Quantum and Photonic Technologies (New Zealand)
M. Minola, Max-Planck-Institut für Festkörperforschung (Germany)
M. C. Simpson, Univ. of Auckland (New Zealand)
Dodd Walls Ctr. for Quantum and Photonic Technologies (New Zealand)
C. Bernhard, Univ. de Fribourg (Switzerland)

Published in SPIE Proceedings Vol. 10533:
Oxide-based Materials and Devices IX
David J. Rogers; David C. Look; Ferechteh H. Teherani, Editor(s)

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