Density of states and the energy gap in superconducting cuprates

Journal Article · Wed Oct 01 00:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.7878· OSTI ID:632589

Adrian, S D; Wolf, S A ^[1]; Dolgov, O ^[2]; Shulga, S ^[3]; Kresin, V Z ^[4]

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1. Naval Research Laboratory, Washington, DC 20375-5000 (United States)
2. P. Lebedev Physical Institute, 117924, Moscow (Russia)
3. Institute of Spectroscopy, 142092, Troitsk (Russia)
4. Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (United States)

The superconducting density of states for the cuprates, particularly for the Y-Ba-Cu-O compound, has been evaluated, and its dependence on temperature and the oxygen content has been analyzed. The analysis is based on the two-gap model. Moreover, the magnetic scattering and corresponding pair-breaking effect, correlated with the oxygen depletion, is taken into account as a key factor. The temperature dependencies of the energy gaps are calculated. Intensive magnetic scattering leads to gaplessness. The calculation allows us to describe various experimental data. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 632589
• Journal Information: Physical Review, B: Condensed Matter, Vol. 56, Issue 13; Other Information: PBD: Oct 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
ENERGY GAP
ENERGY-LEVEL DENSITY
YTTRIUM OXIDES
BARIUM OXIDES
COPPER OXIDES
STOICHIOMETRY