Tunneling measurements of the energy gap in the high- $T_{c}$ superconductor ${Tl}_{2}$ ${Ba}_{2}$ ${Ca}_{2}$ ${Cu}_{3}$ $O_{10 + δ}$

1 December 1989

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 40 (16), 11403-11405
https://doi.org/10.1103/physrevb.40.11403

Abstract

The tunneling I-V characteristic curves have been studied for a ceramic sample of

{Tl}_{2}

{Ba}_{2}

{Ca}_{2}

{Cu}_{3}

O_{10 + δ}

using a scanning tunneling microscope. We have found two kinds of curves which are interpreted as due to the tunneling in superconductor–insulator–normal-metal and superconductor-insulator-superconductor junctions. Although the

T_{c}

of the intervenient superconducting regions are unknown, values of 2Δ/

k_{B}

T_{c}

are around the BCS value 3.5 using the

T_{c}

obtained by resistance measurements.

Keywords

This publication has 11 references indexed in Scilit:

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Cited by 14 articles

Tunneling measurements of the energy gap in the high-Tc superconductor Tl2Ba2Ca2Cu3O10+δ

Abstract

Keywords

Tunneling measurements of the energy gap in the high- $T_{c}$ superconductor ${Tl}_{2}$ ${Ba}_{2}$ ${Ca}_{2}$ ${Cu}_{3}$ $O_{10 + δ}$