43Ca NMR study of the doping effects in the high temperature superconductor (La1–xCax)(Ba1.75–xLa0.25+x)Cu3Oy
作者： Sébastien Marchand , Arlette Trokiner , Andrey Yakubovskii , Philippe Monod , Arkady Knizhnik
DOI: 10.1016/S1387-1609(01)01339-1
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摘要: Nous mesurons la resonance magnetique nucleaire du 43 Ca en fonction de temperature dans l'etat normal supraconducteur a haute (Ca x La 1-x )(Ba 1.75-x 0,25+x )Cu 3 O y . Les echantillons sont choisis maniere comparer l'effet d'une modification des teneurs calcium et oxygene le regime sous-dope. determinons les parametres quadripolaires deplacement Knight (KS). Enfin, nous susceptibilite macroscopique l'utilisons pour estimer champ hyperfin Ca. variation KS lors augmentation teneur ne montre pas signature niveau dopage, contrairement ce que suggere proprietes macroscopiques.
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