Tunneling spectroscopy into substituted YBaCuO systems

A. M. Cucolo; R. Di Leo; A. Nigro; P. Romano; L. F. Schneemeyer

doi:10.1016/0921-4526(94)91371-4

Tunneling spectroscopy into substituted YBaCuO systems

A. M. Cucolo, R. Di Leo, A. Nigro, P. Romano, L. F. Schneemeyer

Chemistry and Biochemistry

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We have studied the tunneling characteristics of Gd and Al substituted YBa₂Cu₃O_7-δ single crystals with T_c = 90 K and 80 K respectively. The high-T_c superconductos were etched 30 min in a 1% Br solution in methanol and the tunnel barriers were formed by exposing the crystals to the ambient atmosphere for about 30 min. Pb film counterelectrodes were thermally evaporated through a metallic mask. No relevant differences have been found in the differential resistance vs voltage of undoped 90 K and Gd junctions, so confirming that Gd is substituting for Y. A different behavior has been found in the Al doped junctions that show smeared structures of reduced amplitude.

Original language	English
Pages (from-to)	1743-1744
Number of pages	2
Journal	Physica B: Physics of Condensed Matter
Volume	194-196
Issue number	PART 2
DOIs	https://doi.org/10.1016/0921-4526(94)91371-4
State	Published - 2 Feb 1994

Access to Document

10.1016/0921-4526(94)91371-4

Cite this

@article{665049c96e444e089db00bba93b08858,

title = "Tunneling spectroscopy into substituted YBaCuO systems",

abstract = "We have studied the tunneling characteristics of Gd and Al substituted YBa2Cu3O7-δ single crystals with Tc = 90 K and 80 K respectively. The high-Tc superconductos were etched 30 min in a 1% Br solution in methanol and the tunnel barriers were formed by exposing the crystals to the ambient atmosphere for about 30 min. Pb film counterelectrodes were thermally evaporated through a metallic mask. No relevant differences have been found in the differential resistance vs voltage of undoped 90 K and Gd junctions, so confirming that Gd is substituting for Y. A different behavior has been found in the Al doped junctions that show smeared structures of reduced amplitude.",

author = "Cucolo, {A. M.} and {Di Leo}, R. and A. Nigro and P. Romano and Schneemeyer, {L. F.}",

year = "1994",

month = feb,

day = "2",

doi = "10.1016/0921-4526(94)91371-4",

language = "English",

volume = "194-196",

pages = "1743--1744",

journal = "Physica B: Physics of Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

number = "PART 2",

}

TY - JOUR

T1 - Tunneling spectroscopy into substituted YBaCuO systems

AU - Cucolo, A. M.

AU - Di Leo, R.

AU - Nigro, A.

AU - Romano, P.

AU - Schneemeyer, L. F.

PY - 1994/2/2

Y1 - 1994/2/2

N2 - We have studied the tunneling characteristics of Gd and Al substituted YBa2Cu3O7-δ single crystals with Tc = 90 K and 80 K respectively. The high-Tc superconductos were etched 30 min in a 1% Br solution in methanol and the tunnel barriers were formed by exposing the crystals to the ambient atmosphere for about 30 min. Pb film counterelectrodes were thermally evaporated through a metallic mask. No relevant differences have been found in the differential resistance vs voltage of undoped 90 K and Gd junctions, so confirming that Gd is substituting for Y. A different behavior has been found in the Al doped junctions that show smeared structures of reduced amplitude.

AB - We have studied the tunneling characteristics of Gd and Al substituted YBa2Cu3O7-δ single crystals with Tc = 90 K and 80 K respectively. The high-Tc superconductos were etched 30 min in a 1% Br solution in methanol and the tunnel barriers were formed by exposing the crystals to the ambient atmosphere for about 30 min. Pb film counterelectrodes were thermally evaporated through a metallic mask. No relevant differences have been found in the differential resistance vs voltage of undoped 90 K and Gd junctions, so confirming that Gd is substituting for Y. A different behavior has been found in the Al doped junctions that show smeared structures of reduced amplitude.

UR - http://www.scopus.com/inward/record.url?scp=18344413168&partnerID=8YFLogxK

U2 - 10.1016/0921-4526(94)91371-4

DO - 10.1016/0921-4526(94)91371-4

M3 - Article

AN - SCOPUS:18344413168

VL - 194-196

SP - 1743

EP - 1744

JO - Physica B: Physics of Condensed Matter

JF - Physica B: Physics of Condensed Matter

SN - 0921-4526

IS - PART 2

ER -

Tunneling spectroscopy into substituted YBaCuO systems

Abstract

Access to Document

Other files and links

Fingerprint

Cite this