Superconductivity of fullerenes doped with binary alkali-metals

K. Tanigaki; I. Hirosawa; Y. Shimakawa; T. W. Ebbesen; J. Mizuki; Y. Kubo; J. S. Tsai; S. Kuroshima

doi:10.1016/0379-6779(93)90109-A

Superconductivity of fullerenes doped with binary alkali-metals

K. Tanigaki, I. Hirosawa, Y. Shimakawa, T. W. Ebbesen, J. Mizuki, Y. Kubo, J. S. Tsai, S. Kuroshima

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

2 Citations (Scopus)

Abstract

Superconducting transition temperature (Tc) and crystal structure of binary alkali-metal doped fullerenes have been studied. A new relationships between Tc and lattice constant (a₀) is presented over a wide range of a₀ for superconducting face-centered cubic (fcc) M₃C₆₀ phases, using a new series of superconductors: Na₂MC₆₀ (Tc=12 K for M=rmK, Tc=2.5 K for M=Rb, Tc = 2.K for M=Cs and Li₂CsC₆₀ (Tc=12 K). The site selectivity of the doped cationic elements for the two tetrahedral and one octahedral interstitial sites per C₆₀ in the fcc lattice is discussed in detail on a basis of refinements of the measured X-ray patterns. The departure from the previous relationship between Tc and a₀ for lattice parameters smaller than that of pristine C₆₀ and the Tc saturation tendency in the large lattice parameter region may provide new insights into what controls superconductivity in these materials.

Original language	English
Pages (from-to)	3240-3245
Number of pages	6
Journal	Synthetic Metals
Volume	56
Issue number	2-3
DOIs	https://doi.org/10.1016/0379-6779(93)90109-A
Publication status	Published - 1993 Apr 5
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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@article{b4bb43bdcf934bb1a7166233d26b8304,

title = "Superconductivity of fullerenes doped with binary alkali-metals",

abstract = "Superconducting transition temperature (Tc) and crystal structure of binary alkali-metal doped fullerenes have been studied. A new relationships between Tc and lattice constant (a0) is presented over a wide range of a0 for superconducting face-centered cubic (fcc) M3C60 phases, using a new series of superconductors: Na2MC60 (Tc=12 K for M=rmK, Tc=2.5 K for M=Rb, Tc = 2.K for M=Cs and Li2CsC60 (Tc=12 K). The site selectivity of the doped cationic elements for the two tetrahedral and one octahedral interstitial sites per C60 in the fcc lattice is discussed in detail on a basis of refinements of the measured X-ray patterns. The departure from the previous relationship between Tc and a0 for lattice parameters smaller than that of pristine C60 and the Tc saturation tendency in the large lattice parameter region may provide new insights into what controls superconductivity in these materials.",

author = "K. Tanigaki and I. Hirosawa and Y. Shimakawa and Ebbesen, {T. W.} and J. Mizuki and Y. Kubo and Tsai, {J. S.} and S. Kuroshima",

year = "1993",

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doi = "10.1016/0379-6779(93)90109-A",

language = "English",

volume = "56",

pages = "3240--3245",

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T1 - Superconductivity of fullerenes doped with binary alkali-metals

AU - Tanigaki, K.

AU - Hirosawa, I.

AU - Shimakawa, Y.

AU - Ebbesen, T. W.

AU - Mizuki, J.

AU - Kubo, Y.

AU - Tsai, J. S.

AU - Kuroshima, S.

PY - 1993/4/5

Y1 - 1993/4/5

N2 - Superconducting transition temperature (Tc) and crystal structure of binary alkali-metal doped fullerenes have been studied. A new relationships between Tc and lattice constant (a0) is presented over a wide range of a0 for superconducting face-centered cubic (fcc) M3C60 phases, using a new series of superconductors: Na2MC60 (Tc=12 K for M=rmK, Tc=2.5 K for M=Rb, Tc = 2.K for M=Cs and Li2CsC60 (Tc=12 K). The site selectivity of the doped cationic elements for the two tetrahedral and one octahedral interstitial sites per C60 in the fcc lattice is discussed in detail on a basis of refinements of the measured X-ray patterns. The departure from the previous relationship between Tc and a0 for lattice parameters smaller than that of pristine C60 and the Tc saturation tendency in the large lattice parameter region may provide new insights into what controls superconductivity in these materials.

AB - Superconducting transition temperature (Tc) and crystal structure of binary alkali-metal doped fullerenes have been studied. A new relationships between Tc and lattice constant (a0) is presented over a wide range of a0 for superconducting face-centered cubic (fcc) M3C60 phases, using a new series of superconductors: Na2MC60 (Tc=12 K for M=rmK, Tc=2.5 K for M=Rb, Tc = 2.K for M=Cs and Li2CsC60 (Tc=12 K). The site selectivity of the doped cationic elements for the two tetrahedral and one octahedral interstitial sites per C60 in the fcc lattice is discussed in detail on a basis of refinements of the measured X-ray patterns. The departure from the previous relationship between Tc and a0 for lattice parameters smaller than that of pristine C60 and the Tc saturation tendency in the large lattice parameter region may provide new insights into what controls superconductivity in these materials.

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JO - Synthetic Metals

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