Unconventional isotope effects in superconductors

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

DOI:https://doi.org/10.1103/PhysRevB.56.107· OSTI ID:531800

Kresin, V Z; Bill, A ^[1]; Wolf, S A ^[2]; Ovchinnikov, Y N ^[3]

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1. Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 (United States)
2. Naval Research Laboratory, Washington, DC 20375-5000 (United States)
3. Landau Institute for Theoretical Physics, Moscow, (Russia) 11733V

The value of the isotope coefficient could be greatly affected by a number of factors not related to the lattice dynamics. Among them are magnetic scattering, the presence of a normal film (proximity effect), and nonadiabaticity (dynamic Jahn-Teller effect). The results are in good agreement with existing experimental data for oxygen isotope substitution (O{sup 16}{r_arrow}O{sup 18}) in the YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}, Y{sub 1{minus}x}Pr{sub x}Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}, YBa{sub 2}(Cu{sub 1{minus}x}Zn{sub x}){sub 3}O{sub 7{minus}{delta}} compounds. In addition, we make several predictions related to conventional as well as to high-T{sub c} materials. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 531800
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 1 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
ISOTOPE EFFECTS
JAHN-TELLER EFFECT
MAGNETIC PROPERTIES
PRASEODYMIUM OXIDES
PROXIMITY EFFECT
SUPERCONDUCTING FILMS
YTTRIUM OXIDES
ZINC OXIDES