Anomalous charge-transfer in La{sub 2{minus}{beta}}Sr{sub {beta}}CuO{sub 4} and in Nd{sub 2{minus}{ital z}}Ce{sub {ital z}}CuO{sub 4}

Journal Article · Thu Dec 14 23:00:00 EST 1995 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.360426· OSTI ID:130699

Blackstead, H A ^[1]; Dow, J D ^[2]

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1. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
2. Department of Physics and Astronomy, Arizona State University, Tempe, Arizona 85287-1504 (United States)

The hypothesis of charge-transfer to the cuprate-planes, which lies at the foundation for most theories on high-temperature superconductivity, is re-examined in light of recent neutron-diffraction data for La{sub 2{minus}{beta}}Sr{sub {beta}}CuO{sub 4} and Nd{sub 2{minus}{ital z}}Ce{sub {ital z}}CuO{sub 4}. The data indicate that the cuprate-planes do not acquire holes as the materials become superconducting, and that the superconducting {ital p}-type regions of the unit cells are in the noncuprate-plane charge-reservoir layers instead. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

• Research Organization: Purdue Research Foundation
• DOE Contract Number: FG02-90ER45427
• OSTI ID: 130699
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 12 Vol. 78; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
CERIUM OXIDES
CHARGE TRANSPORT
COPPER OXIDES
DATA ANALYSIS
DOPED MATERIALS
HIGH-TC SUPERCONDUCTORS
LANTHANUM OXIDES
NEODYMIUM OXIDES
NEUTRON DIFFRACTION
STRONTIUM OXIDES