Tunneling spectroscopy in (Pb sub(x)Bi sub(1-x)) sub(2)Sr sub(2)CaCu sub(2)O sub(8) crystals

Tunneling experiments on single crystals of the (Pb sub(x)Bi sub(1-x)) sub(2)Sr sub(2)CaCu sub(2)O sub(8) compound have been performed with the aid of a low temperature tunneling microscope. Tunneling in the crystal c-axis direction resulted in a parabolic current-voltage dependence for voltages up...

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Published in:Superconductor science & technology 1991-01, Vol.4 (1S), p.S412-S414
Main Authors: Wnuk, J J, Smokers, R T M, Nolden, F W, Schreurs, L W M, Wang, Y S, van Kempen, H
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container_issue 1S
container_start_page S412
container_title Superconductor science & technology
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creator Wnuk, J J
Smokers, R T M
Nolden, F W
Schreurs, L W M
Wang, Y S
van Kempen, H
description Tunneling experiments on single crystals of the (Pb sub(x)Bi sub(1-x)) sub(2)Sr sub(2)CaCu sub(2)O sub(8) compound have been performed with the aid of a low temperature tunneling microscope. Tunneling in the crystal c-axis direction resulted in a parabolic current-voltage dependence for voltages up to 0.2 V, unless the tungsten tip was pushed into the crystal. By changing the configuration to perpendicular to the c-axis, clear energy gap effects were observed. Tunneling between two crystals resulted in conductivity characteristic to a Superconductor - Insulator - Superconductor (SIS) junction.
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title Tunneling spectroscopy in (Pb sub(x)Bi sub(1-x)) sub(2)Sr sub(2)CaCu sub(2)O sub(8) crystals
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