Softening of bond-stretching phonon mode in Ba1−xKxBiO3at the metal-insulator transition
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چکیده
منابع مشابه
Enhancement of the superconducting transition temperature of MgB2 by a strain-induced bond-stretching mode softening.
We report a systematic increase of the superconducting transition temperature T(c) with a biaxial tensile strain in MgB2 films to well beyond the bulk value. The tensile strain increases with the MgB2 film thickness, caused primarily by the coalescence of initially nucleated discrete islands (the Volmer-Weber growth mode.) The T(c) increase was observed in epitaxial films on SiC and sapphire su...
متن کاملEnhancement of superconducting transition temperature in MgB2 by strain-induced bond-stretching mode softening
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2011
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.83.224525