TY - JOUR
T1 - Superconducting properties of CdCNi3
AU - Uehara, Masatomo
AU - Yamazaki, Takahiro
AU - Kôri, Tatsuya
AU - Kashida, Takeshi
AU - Kimishima, Yoshihide
AU - Hase, Izumi
PY - 2007/3
Y1 - 2007/3
N2 - CdCNi3 is a newly synthesized superconductor with Tc = 2.5-3.2 K. The crystal has the same perovskite-type structure as MgCNi 3 but the lattice constant is ∼1% larger than that of MgCNi 3. For this material, superconducting parameters, lower critical field Hc1(0), upper critical field Hc2(0), coherence length ξ(0), penetration depth λ(0), Ginzburg-Landau parameter κ(0), electronic specific heat coefficient γ, and Debye temperature ΘD have been experimentally determined. Also, full-potential augmented plane wave band calculation has been performed for CdCNi3. From experimental and band calculation results, it has been suggested that the smaller density of states at the Fermi energy and enhanced ferromagnetic correlation reduce the Tc of CdCNi3, compared with that of MgCNi3.
AB - CdCNi3 is a newly synthesized superconductor with Tc = 2.5-3.2 K. The crystal has the same perovskite-type structure as MgCNi 3 but the lattice constant is ∼1% larger than that of MgCNi 3. For this material, superconducting parameters, lower critical field Hc1(0), upper critical field Hc2(0), coherence length ξ(0), penetration depth λ(0), Ginzburg-Landau parameter κ(0), electronic specific heat coefficient γ, and Debye temperature ΘD have been experimentally determined. Also, full-potential augmented plane wave band calculation has been performed for CdCNi3. From experimental and band calculation results, it has been suggested that the smaller density of states at the Fermi energy and enhanced ferromagnetic correlation reduce the Tc of CdCNi3, compared with that of MgCNi3.
KW - CdCNi
KW - FLAPW band calculation
KW - Specific heat measurement
KW - Superconducting parameter
KW - Superconductivity
UR - http://www.scopus.com/inward/record.url?scp=33947217803&partnerID=8YFLogxK
U2 - 10.1143/JPSJ.76.034714
DO - 10.1143/JPSJ.76.034714
M3 - Article
AN - SCOPUS:33947217803
SN - 0031-9015
VL - 76
JO - journal of the physical society of japan
JF - journal of the physical society of japan
IS - 3
M1 - 034714
ER -