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Granular superconductivity and magnetic-field-driven recovery of macroscopic coherence in a cuprate/manganite multilayer

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Biskup Zaja, Nevenko and Varela del Arco, María and Mallet, B.P.P. and Khmaladze, J. and Marsik, P. and Perret, E. and Cerreta, A. and Orlita, M. and Bernhard, C. (2016) Granular superconductivity and magnetic-field-driven recovery of macroscopic coherence in a cuprate/manganite multilayer. Physical review B, 94 (18). ISSN 2469-9950

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Official URL: http://dx.doi.org/10.1103/PhysRevB.94.180503



Abstract

We show that in Pr_(0.5)La_(0.2)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7) (PLCMO/YBCO) multilayers the low temperature state of YBCO is very resistive and resembles that of a granular superconductor or a frustrated Josephson-junction network. Notably, a coherent superconducting response can be restored with a large magnetic field which also suppresses the charge-orbital order in PLCMO. This coincidence suggests that the granular superconducting state of YBCO is induced by the charge-orbital order of PLCMO. The coupling mechanism and the nature of the induced inhomogeneous state in YBCO remain to be understood.


Item Type:Article
Additional Information:

© 2016 American Physical Society. The work at UniFr has been supported by the Swiss National Foundation (SNF) through Grants No. 200020-153660 and No. CRSII2-154410/1.

Uncontrolled Keywords:Insulator transition; Phase-transitions; Interface; Ellipsometry; Resistance; Films; Order
Subjects:Sciences > Physics > Electricity
Sciences > Physics > Electronics
ID Code:42357
Deposited On:28 Apr 2017 08:09
Last Modified:10 Dec 2018 14:57

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