Tunneling spectroscopy into YBa[sub 2]Cu[sub 4]O[sub 8]: Intralayer and interlayer analysis

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.50.10397· OSTI ID:6907827

Cucolo, A M; Leo, R D; Romano, P ^[1]; Dabrowski, B; Hinks, D G; Radaelli, P G ^[2]

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1. Dipartimento di Fisica, Universita di Salerno, I-84081 Baronissi (Saudi Arabia) (Italy)
2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

We have measured the superconducting and normal tunneling characteristics of quality controlled planar junctions based on YBa[sub 2]Cu[sub 4]O[sub 8] (Y124) single crystals. Our data show that the in-plane properties are similar to the YBa[sub 2]Cu[sub 3]O[sub 7] (Y123) system. A higher value of the zero-bias conductance is measured in the Y124, indicating an increased number of normal electrons due to the presence of the double chain structure. Linearity of the background conductance is observed in both compounds. Less steep slopes are found in Y124 that might indicate a reduced interlayer coupling in this system.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6907827
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 50:14; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
JUNCTIONS
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
YTTRIUM COMPOUNDS
YTTRIUM OXIDES