Phase diagram of pnictide superconductors
Phase diagram of pnictide superconductors
Phase diagram of pnictide superconductors
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Fe <strong>pnictide</strong>s: A class <strong>of</strong> high T c <strong>superconductors</strong><br />
0<br />
FC<br />
χ (% (4π) −1 )<br />
-10<br />
-20<br />
-30<br />
1111 systems<br />
BaAs 2<br />
Fe 1.9<br />
Co 0.1<br />
SE 1737 A<br />
La, Ce … Gd-based<br />
F, O doped<br />
B = 20G<br />
ZFC<br />
F doped REOFeAs<br />
O defici. REOFeAs<br />
Sm doped SrFFeAs<br />
0 5 10 15 20<br />
T (K)<br />
122 systems<br />
Ba, Sr, Eu, Ca- based<br />
K, Na, Co doped<br />
T c up to 39 K<br />
Intermetallic comp.<br />
Single crystals<br />
M. Rotter, M. Tegel,<br />
and D. Johrendt<br />
PRL 2008
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