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Title of Journal: J Supercond Nov Magn

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Abbravation: Journal of Superconductivity and Novel Magnetism

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Springer US

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DOI

10.1002/pssb.2221000134

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ISSN

1557-1947

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Lattice Anomalies and HTSC in Pnictides and Cuprat

Authors: H Oyanagi C J Zhang
Publish Date: 2010/09/23
Volume: 24, Issue: 1-2, Pages: 89-95
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Abstract

Temperaturedependent local lattice structures of 1111type ReFeAsO1−x F x Re=La Sm are studied by extended Xray absorption fine structure EXAFS and compared with the results of impuritydoped La185Sr015CuO4 As electron carriers are introduced by doping with F ions pnictgen coordination around Fe atom shows unusual local lattice response below T ∗ described as an anomalous temperature dependence of meansquared relative displacement The observed local lattice distortion leading to two distinct bond lengths R 1 and R 2 where ΔR=R 1−R 2∼01 Å is a signature of localized polaron formation The effect of magnetic impurities in La185Sr015CuO4 indicates bond stretchingtype lattice distortion favours polaron resonance as a common prerequisite for hightemperature superconductivity

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  2. Magnetic Resonance and Superconductivity: Some History, Ancient and in the Making
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  7. Novel Synthesis and Nanostructure Controlled Magnetic Characteristics of ε -Fe 3 N and γ ′-Ni x Fe 4− x N (0.2 ≤ x ≤ 0.8) Nitrides
  8. Stability Study of Mg and Al Doped and Co Doped ZnO Hydrides by Ab Initio Calculations
  9. Enhancement in the Superconductivity of Tl(Ba 2− x Mg x )(Ca 1 Be 1 )Cu 3 O 10− δ System with the Decreased Thickness of Charge Reservoir Layer
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  12. A Compact Treatment of Singular Impurities Using the Artificial Friedel Resonance (FAIR) Technique
  13. The Superconducting Magnetoresistance Effect in Ni 80 Fe 20 –Nb–Ni 80 Fe 20 and Co–Nb–Co Trilayers: Requisites for Tailoring its Magnitude
  14. Pressure-Induced Insulator to Metal Transition and Superconductivity of the Inert Gases
  15. Magnetic Properties of CuTi 2−2 x Cr 2 x S 4 Materials
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