Superconductivity in cubic and tetragonal phases of (La1-yMy)3S4 with M = Vacancy, Sc, Y, Ce, Lu, Th

K. Ikeda; A. Chiba; K. A. Gschneidner; Y. C.S. Yeh; B. J. Beaudry; N. Kobayashi; K. Noto

doi:10.1016/0378-4363(85)90513-3

Superconductivity in cubic and tetragonal phases of (La_1-yM_y)₃S₄ with M = Vacancy, Sc, Y, Ce, Lu, Th

K. Ikeda, A. Chiba, K. A. Gschneidner, Y. C.S. Yeh, B. J. Beaudry, N. Kobayashi, K. Noto

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The measurements of the electrical resistivity and the low temperature heat capacity in the superconducting (La_1-yM_y)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 La_0.97Th_0.03S_1.333, which has ∼10% higher T_c and about a threefold higher H_c2(0) than the hypothetical values in the tetragonal LaS_1.333. The relationship between H_c2(0) and T_c (i.e. H_c2(0) = C₀T_c, where C₀ = 1.96 and 1.32 T/K for the cubic and tetragonal phases, respectively ) is found in a series of La_1-yM_yS_x compounds. The high H_c2(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.

Original language	English
Pages (from-to)	391-393
Number of pages	3
Journal	Physica B+C
Volume	135
Issue number	1-3
DOIs	https://doi.org/10.1016/0378-4363(85)90513-3
Publication status	Published - 1985 Dec 2
Externally published	Yes

ASJC Scopus subject areas

Engineering(all)

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@article{14349a18dad64e8c8eaf1f90c81652c5,

title = "Superconductivity in cubic and tetragonal phases of (La1-yMy)3S4 with M = Vacancy, Sc, Y, Ce, Lu, Th",

abstract = "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.",

author = "K. Ikeda and A. Chiba and Gschneidner, {K. A.} and Yeh, {Y. C.S.} and Beaudry, {B. J.} and N. Kobayashi and K. Noto",

year = "1985",

month = dec,

day = "2",

doi = "10.1016/0378-4363(85)90513-3",

language = "English",

volume = "135",

pages = "391--393",

journal = "Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics",

issn = "0378-4363",

publisher = "North-Holland Publ Co",

number = "1-3",

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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.

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DO - 10.1016/0378-4363(85)90513-3

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VL - 135

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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

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