TY - JOUR
KW - Yttrium compounds
KW - High temperature superconductors
KW - Superconducting materials
KW - Electronic properties
KW - Ceramic materials
KW - Yttrium barium copper oxides
KW - Oxide superconductors
KW - Gold and Alloys
KW - Silver and Alloys
KW - Proximity Tunneling Spectroscopy
AU - L.H Greene
AU - J.B Barner
AU - W.L Feldmann
AU - L.A Farrow
AU - P.F Miceli
AU - Ramamoorthy Ramesh
AU - B.J Wilkens
AU - B.G Bagley
AU - J.M Tarascon
AU - J.H Wernick
AU - M Giroud
AU - J.M Rowell
AB - The short coherence length of the high-Tc superconductors, coupled with their tendency to form non-superconducting surface layers, accounts for the difficulty in achieving good tunnel junctions. A proximity layer of a longer coherence length normal metal (N) is expected to "draw out" Cooper pairs. Our goal is to fabricate reproducible, planar tunnel junctions of SNIS layered structures for proximity tunneling spectroscopy. Such structures of YBCO/N/I/Pb and SNS structures of YBCO/N/Pb indicate that the normal metal produces a low resistance contact to the YBCO surface with a supercurrent observed in the SNS. The insulating barrier in the SNIS is reproducible, insulating and continuous: A sharp Pb gap and phonons from the counter-electrode are routinely observed. © 1989.
BT - Physica C: Superconductivity and its applications
DO - 10.1016/0921-4534(89)90597-2
LA - eng
M1 - PART 2
N1 - cited By 18
N2 - The short coherence length of the high-Tc superconductors, coupled with their tendency to form non-superconducting surface layers, accounts for the difficulty in achieving good tunnel junctions. A proximity layer of a longer coherence length normal metal (N) is expected to "draw out" Cooper pairs. Our goal is to fabricate reproducible, planar tunnel junctions of SNIS layered structures for proximity tunneling spectroscopy. Such structures of YBCO/N/I/Pb and SNS structures of YBCO/N/Pb indicate that the normal metal produces a low resistance contact to the YBCO surface with a supercurrent observed in the SNS. The insulating barrier in the SNIS is reproducible, insulating and continuous: A sharp Pb gap and phonons from the counter-electrode are routinely observed. © 1989.
PY - 1989
SP - 1069
EP - 1070
T2 - Physica C: Superconductivity and its applications
TI - Studies of proximity-effect and tunneling in YBCO/metal layered films
VL - 162-164
SN - 09214534
ER -