Published March 1, 2009 | Version v1
Journal article Metadata-only

Midgap Andreev resonant state affected by superconducting proximity effect of high-Tc cuprate attached to diffusive normal metal

Creators

  • 1. Department of Physics, Kagoshima University, Kagoshima 890-0065 (Japan)
  • 2. Department of Electrical and Electronic Engineering, Akita University, Akita 010-8502 (Japan)
  • 3. Department of Applied Physics, Hokkaido University, Sapporo 060-8628 (Japan)
  • 4. Department of Applied Physics, Nagoya University, Nagoya 464-8603 (Japan)

Description

We report how a midgap Andreev resonant state (MARS) is affected by the superconducting proximity effect at an interface of diffusive normal metal/insulator/dx.2y2-wave superconductor (DN/I/DS) junctions. A zero-bias conductance peak (ZBCP) was observed for the (110)-oriented interface in Ag/SiO/Bi2Sr2CaCu2O8+δ (Bi-2212) planar junctions. The experimental ZBCP was analyzed by the extended circuit theory, which was improved by the introduction of spatial variations of the pair potential in a DS electrode near the junction interface. Our experimental results are well explained by the extended circuit theory for DN/I/DS junctions.

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/150/5/052236

Additional details

Identifiers

DOI
10.1088/1742-6596/150/5/052236;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
150
Journal Issue
5
Journal Page Range
[4 p.]
ISSN
1742-6596

Conference

Title
25. international conference on low temperature physics
Acronym
LT25
Dates
6-13 Aug 2008
Place
Amsterdam (Netherlands)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41110616
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; CIRCUIT THEORY; CUPRATES; ELECTRODES; HIGH-TC SUPERCONDUCTORS; INTERFACES; POTENTIALS; PROXIMITY EFFECT; SILICON OXIDES; SILVER; STRONTIUM COMPOUNDS; SUPERCONDUCTING JUNCTIONS; SUPERCONDUCTIVITY
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTS; METALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SILICON COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; TYPE-II SUPERCONDUCTORS