Electronic structure of the electron-doped superconductor Nd sub 2 minus x Ce sub x CuO sub 4 minus y studied by photoemission spectroscopy

Journal Article · Sun Jul 01 04:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.42.325· OSTI ID:6826292

Fujimori, A; Tokura, Y ^[1]; Eisaki, H; Takagi, H; Uchida, S ^[2]; Takayama-Muromachi, E ^[3]

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1. Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113 (Japan)
2. Engineering Research Institute, University of Tokyo, Bunkyo-ku, Tokyo 113 (Japan)
3. National Institute for Research in Inorganic Materials, Tsukuba-shi, Ibaraki-ken 305 (Japan)

The electronic structure of the electron-doped superconductor Nd{sub 2{minus}{ital x}}Ce{sub {ital x}}CuO{sub 4{minus}{ital y}} has been studied by photoemission spectroscopy. The results indicate that the system is indeed doped with electrons supplied by the Ce{sup 4+} ions substituting Nd{sup 3+} sites. From the Cu core-level and the valence-band results, however, we find no evidence for the occupation of Cu 3{ital d} orbitals by the doped electrons at least for low doping concentrations {ital x}{le}0.15.

• OSTI ID: 6826292
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:1; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DOPED MATERIALS
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
HIGH-TC SUPERCONDUCTORS
MATERIALS
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
RARE EARTH COMPOUNDS
SPECTROSCOPY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
VALENCE