Superconducting quantum interference phenomenon in Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ single crystals

Details Superconducting quantum interference phenomenon in Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ single crystals Superconducting quantum interference phenomenon in Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ single crystals

2005-08-16

arxiv.org/abs/cond-mat/0508376v1

Phys. Rev. B 72 (2005) 212501

Physics

Condensed Matter

Superconductivity

3 pages, 3 figures

Scientific paper

10.1103/PhysRevB.72.212501

The operational dc-SQUID based on intrinsic Josephson junctions in Bi$_2$Sr$_2$CaCu2O$_{8+\delta}$ high-$T_c$ superconductor is fabricated and studied. The novel in-plane loop layout and the developed in-situ endpoint detection method allowed an accurate control of the number of junctions in the SQUID. A clear periodic modulation of the superconducting current as a function of magnetic flux through the SQUID loop is observed. This is an unambiguous evidence for the quantum interference phenomenon in Bi$_2$Sr$_2$CaCu2O$_{8+\delta}$ single crystals.

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