Tunneling measurements of the superconductor Nd{sub 1.85}Ce{sub 0.15}CuO{sub 4-{delta}}

Journal Article · Fri Nov 01 00:00:00 EST 1996 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/BF00768445· OSTI ID:457216

Ekino, Toshikazu; Fujii, Hironobu; Doukan, Takashi ^[1]

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1. Hiroshima Univ., Higashi (Japan)

The authors report tunneling measurements of the electron-doped superconductor Nd{sub 1.85}Ce{sub 0.15}CuO{sub 4-{delta}} using break junctions. The observed finest gap structure is well expressed by the BCS density of states with the energy gap of {Delta} = 6.1 meV and a very small broadening parameter, having the ratio 2{Delta}/k{sub B}T{sub c} = 8.2 with T{sub c} = 17.3 K. These features are similar to the authors tunneling results for the hole-doped cuprate superconductors. Therefore they find no essential difference in the gap structure, in spite of a common believing of the pairing-symmetry difference between them.

• Sponsoring Organization: USDOE
• OSTI ID: 457216
• Report Number(s): CONF-960808-; ISSN 0022-2291; TRN: 97:012212
• Journal Information: Journal of Low Temperature Physics, Vol. 105, Issue 3-4; Conference: 3. international conference on physics and chemistry of molecular and oxide superconductors, Karlsruhe (Germany), 2-6 Aug 1996; Other Information: PBD: Nov 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
NEODYMIUM OXIDES
ENERGY GAP
CERIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
PAIRING INTERACTIONS