Energy spectrum in the high T{sub c} oxides

Journal Article · Tue Aug 01 04:00:00 EDT 1995 · Journal of Superconductivity

DOI:https://doi.org/10.1007/BF00722825· OSTI ID:136189

Kresin, V Z; Ovchinnikov, Y N ^[1]; Wolf, S A ^[2]

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1. Lawrence Berkeley Lab., CA (United States)
2. Naval Research Lab., Washington, DC (United States); and others

The energy gap structure of the cuprates depends strongly on levels of doping. The stoichiometric compound YBa{sub 2}Cu{sub 3}O{sub 7} displays a peculiar two-gap structure. Oxygen depletion is accompanied by the transition to the gapless state, and this is manifested in various transport, electromagnetic, etc. properties of the material. The temperature dependence of the penetration depth correlates with oxygen content and is characterized by various power laws in an oxygen depleted sample. In other cuprates, overdoping leads to gaplessness and a peculiar dependence of H{sub c2}.

• OSTI ID: 136189
• Report Number(s): CONF-950144--; CNN: Contract N00014-94-F006; Contract N00014-94-1-G027
• Journal Information: Journal of Superconductivity, Journal Name: Journal of Superconductivity Journal Issue: 4 Vol. 8; ISSN JOUSEH; ISSN 0896-1107
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
COPPER OXIDES
ENERGY GAP
HIGH-TC SUPERCONDUCTORS
OXYGEN
PENETRATION DEPTH
STOICHIOMETRY
TEMPERATURE DEPENDENCE
YTTRIUM OXIDES