TY - JOUR
T1 - Josephson tunneling in Bi2Sr2CaCu2O8+δ single-crystal break junctions
AU - Tao, H. J.
AU - Lu, Farun
AU - Zhang, G.
AU - Wolf, E. L.
N1 - Funding Information:
This work was supportebdy the AFOSR, Grant F 49620-93-112 4,and in part by the NationalC enter for Researcha ndD evelopmenotn Superconductivity, Beijing.W e gratefulltyh ankB . Yin of The Institute of Physicsf or providingth e DC magnetiscu s-ceptibilitmy easuremeonft the Bi-2212c rystal.
PY - 1994/4/20
Y1 - 1994/4/20
N2 - Josephson tunneling I-V characteristics have been observed in break junctions of oxygen-annealed Bi2Sr2CaCu2O8 (Bi-2212) single crystals, with IcRn≈21.3 mV, and with a sharp quasiparticle edge at 2Δ≈2×20 mV. This demonstrates that low values of the IcRn product, thus far as observed in HTS thin-film junctions, do not represent a fundamental limitation. The sharp quasi-particle current rise at eV=2Δ in these SIS break junctions appears to afford an accurate measurement to be made of a well-defined gap edge.
AB - Josephson tunneling I-V characteristics have been observed in break junctions of oxygen-annealed Bi2Sr2CaCu2O8 (Bi-2212) single crystals, with IcRn≈21.3 mV, and with a sharp quasiparticle edge at 2Δ≈2×20 mV. This demonstrates that low values of the IcRn product, thus far as observed in HTS thin-film junctions, do not represent a fundamental limitation. The sharp quasi-particle current rise at eV=2Δ in these SIS break junctions appears to afford an accurate measurement to be made of a well-defined gap edge.
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U2 - 10.1016/0921-4534(94)90612-2
DO - 10.1016/0921-4534(94)90612-2
M3 - Article
AN - SCOPUS:0028408463
SN - 0921-4534
VL - 224
SP - 117
EP - 120
JO - Physica C: Superconductivity and its applications
JF - Physica C: Superconductivity and its applications
IS - 1-2
ER -