Magnetoconductance of planar cuprate superconductor/graphene junctions
ORAL
Abstract
Graphene/superconductor junctions have been extensively studied using low-Tc superconductors, but studies involving high-Tc temperature cuprates are scarce despite their interest for instance the rich physics expected from the d-wave order parameter. Here we study planar high-Tc superconductor/graphene junctions fabricated by transferring CVD graphene onto optimally doped c-axis PDL grown YBaCuO7-x films, which are patterned using electron lithography and ion irradiation. Transport measurements at low temperature revealed an interesting, anomalous behavior of the magnetoconductance, which first increases at low magnetic fields before remaining constant or decreasing depending on the samples. This effect highly depends on temperature and voltage bias applied to the junction. We will discuss the different scenarios allowing for an understanding of this behavior.
*Work supported by the ERC grant no 647100 “SUSPINTRONICS”
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Presenters
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Kevin Seurre
- Unité mixte de physique CNRS-Thales, Palaiseau, France
- Unité Mixté de physique, CNRS