TY - JOUR
T1 - Superconductivity in cubic and tetragonal phases of (La1-yMy)3S4 with M = Vacancy, Sc, Y, Ce, Lu, Th
AU - Ikeda, K.
AU - Chiba, A.
AU - Gschneidner, K. A.
AU - Yeh, Y. C.S.
AU - Beaudry, B. J.
AU - Kobayashi, N.
AU - Noto, K.
PY - 1985/12/2
Y1 - 1985/12/2
N2 - The measurements of the electrical resistivity and the low temperature heat capacity in the superconducting (La1-yMy)3S4 compounds with M = vacancy, Sc, Y, Ce, Lu, and Th were made in zero field and in magnetic fields up to 16 and 10 T, respectively. The optimum superconducting properties appear in the cubic La0.97Th0.03S1.333, which has ∼10% higher Tc and about a threefold higher Hc2(0) than the hypothetical values in the tetragonal LaS1.333. The relationship between Hc2(0) and Tc (i.e. Hc2(0) = C0Tc, where C0 = 1.96 and 1.32 T/K for the cubic and tetragonal phases, respectively ) is found in a series of La1-yMySx compounds. The high Hc2(0) values for the cubic compounds originate in the anomalously large values of the residual resistivity, which may reflect the instability of the cubic lattice.
AB - The measurements of the electrical resistivity and the low temperature heat capacity in the superconducting (La1-yMy)3S4 compounds with M = vacancy, Sc, Y, Ce, Lu, and Th were made in zero field and in magnetic fields up to 16 and 10 T, respectively. The optimum superconducting properties appear in the cubic La0.97Th0.03S1.333, which has ∼10% higher Tc and about a threefold higher Hc2(0) than the hypothetical values in the tetragonal LaS1.333. The relationship between Hc2(0) and Tc (i.e. Hc2(0) = C0Tc, where C0 = 1.96 and 1.32 T/K for the cubic and tetragonal phases, respectively ) is found in a series of La1-yMySx compounds. The high Hc2(0) values for the cubic compounds originate in the anomalously large values of the residual resistivity, which may reflect the instability of the cubic lattice.
UR - http://www.scopus.com/inward/record.url?scp=0022186392&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0022186392&partnerID=8YFLogxK
U2 - 10.1016/0378-4363(85)90513-3
DO - 10.1016/0378-4363(85)90513-3
M3 - Article
AN - SCOPUS:0022186392
VL - 135
SP - 391
EP - 393
JO - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
JF - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
SN - 0378-4363
IS - 1-3
ER -