Physics – Condensed Matter – Superconductivity
Scientific paper
2011-09-08
Phys. Rev. Lett. 107, 247002 (2011)
Physics
Condensed Matter
Superconductivity
Scientific paper
10.1103/PhysRevLett.107.247002
Using heterostructures that combine a large-polarization ferroelectric (BiFeO3) and a high-temperature superconductor (YBa2Cu3O7-{\delta}), we demonstrate the modulation of the superconducting condensate at the nanoscale via ferroelectric field effects. Through this mechanism, a nanoscale pattern of normal regions that mimics the ferroelectric domain structure can be created in the superconductor. This yields an energy landscape for magnetic flux quanta and, in turn, couples the local ferroelectric polarization to the local magnetic induction. We show that this form of magnetoelectric coupling, together with the possibility to reversibly design the ferroelectric domain structure, allows the electrostatic manipulation of magnetic flux quanta.
Barthelemy Agnes
Bernard Rozenn
Bibes Manuel
Bourdais D. Le
Bouzehouane Karim
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