Electronic structure of CuO{sub 2} planes: From insulator to superconductor

Journal Article · Tue Jul 01 04:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.R525· OSTI ID:531845

LaRosa, S; Vobornik, I; Zwick, F; Berger, H; Grioni, M; Margaritondo, G ^[1]; Kelley, R J; Onellion, M ^[2]; Chubukov, A ^[2]

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1. Institut de Physique Appliquee, Ecole Politechnique Federale, Lausanne (Switzerland)
2. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)

Using angle-resolved photoemission and linearly polarized synchrotron radiation, we measured the electronic band structure of electronic states of CuO{sub 2} plane materials ranging from insulators (Sr{sub 2}CuO{sub 2}Cl{sub 2}) to overdoped superconductors (Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+x}). We report three results: (i) The CuO{sub 2} containing insulator possesses a spin-density-wave (SDW) ground state; (ii) there are precursors of the SDW state for underdoped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+x}; (iii) an extended saddle-point-type van Hove singularity is neither a necessary nor a sufficient condition for a high superconducting transition temperature, T{sub c}. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 531845
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 2 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
BAND THEORY
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
CRITICAL TEMPERATURE
ELECTRONIC STRUCTURE
HIGH-TC SUPERCONDUCTORS
PHOTOEMISSION
SPIN WAVES
STRONTIUM OXIDES
SYNCHROTRON RADIATION