Possible high temperature superconductivity in Ti-doped A-Sc-Fe-As-O (A= Ca, Sr) system

Details Possible high temperature superconductivity in Ti-doped A-Sc-Fe-As-O (A= Ca, Sr) system Possible high temperature superconductivity in Ti-doped A-Sc-Fe-As-O (A= Ca, Sr) system

2009-03-30

arxiv.org/abs/0903.5273v3

Superconductor Science and Technology 22, 072001 (2009)

Physics

Condensed Matter

Superconductivity

8 pages, 4 figures, 2 new figures

Scientific paper

We report a systematic study on the effect of partial substitution of
Sc$^{3+}$ by Ti$^{4+}$ in Sr$_{2}$ScFeAsO$_{3}$, Ca$_{2}$ScFeAsO$_{3}$ and
Sr$_{3}$Sc$_{2}$Fe$_{2}$As$_{2}$O$_{5}$ on their electrical properties. High
level of doping results in an increased carrier concentration and leads to the
appearance of superconductivity with the onset of T$_{c}$ up to 45 K.

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