Correlation between d-wave pairing behavior and magnetic-field-dependent zero-bias conductance peak

Journal Article · Mon Dec 01 00:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.13746· OSTI ID:550510

Ekin, J W; Xu, Y ^[1]; Mao, S; Venkatesan, T ^[2]; Face, D W ^[3]; Eddy, M ^[4]; Wolf, S A ^[5]

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1. Electromagnetic Technology Division, NIST, Boulder, Colorado 80303 (United States)
2. University of Maryland, College Park, Maryland 20742 (United States)
3. DuPont Central Research and Development, Wilmington, Delaware 19880-0304 (United States)
4. Superconductor Technologies, Inc., Santa Barbara, California 93111-2310 (United States)
5. Naval Research Laboratory, Washington, DC 20375 (United States)

We consistently observe a magnetic-field-dependent conductance peak at zero-bias voltage in a wide range of superconductor/noble-metal junctions fabricated from oxide superconductors (YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} and Tl{sub 2}Ba{sub 2}CaCu{sub 2}O) that have been reported to exhibit d-wave pairing behavior; however, no measurable peak appears in similar junctions made from an s-wave oxide superconductor (Nd{sub 1.85}Ce{sub 0.15}CuO{sub 4}). Explanations of this correlation are considered in terms of the Appelbaum-Anderson model for magnetic interface scattering and the midgap-state model for d-wave interface states. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 550510
• Journal Information: Physical Review, B: Condensed Matter, Vol. 56, Issue 21; Other Information: PBD: Dec 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER OXIDES
SUPERCONDUCTING JUNCTIONS
D WAVES
YTTRIUM OXIDES
BARIUM OXIDES
THALLIUM OXIDES
CALCIUM OXIDES
NEODYMIUM OXIDES
CERIUM OXIDES
HIGH-TC SUPERCONDUCTORS
INTERFACES
COOPER PAIRS
ELECTRONIC STRUCTURE