Superconductivity at 33 K in CsxRbyC60

K. Tanigaki; T. W. Ebbesen; S. Saito; J. Mizuki; J. S. Tsai; Y. Kubo; S. Kuroshima

doi:10.1038/352222a0

Superconductivity at 33 K in Cs_xRb_yC₆₀

K. Tanigaki, T. W. Ebbesen, S. Saito, J. Mizuki, J. S. Tsai, Y. Kubo, S. Kuroshima

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

335 Citations (Scopus)

Abstract

THE synthesis of macroscopic quantities^1,2 of the fullerenes C₆₀ and C₇₀ has led to discoveries of several unusual properties^3-10, in particular the high conductivity³ and superconductivity^4-6 of alkali-metal-doped phases. Here we report a superconducting phase of C₆₀ doped with caesium and rubidium, which has the highest transition temperature T_c and the largest diamagnetic shielding found so far for the alkali-metal-doped compounds. CS_xRb_yC₆₀ (x = 2 and y = 1 in the dopant feed) exhibits a T_c of 33 K and a diamagnetic shielding of over 60%. This is also the highest T_c yet observed in a molecular superconductor. The vari-ation of T_c with dopant, T_c (K_xC₆₀) [18 K]< T_c (Rb_xC₆₀) [∼29 K]< T_c (Cs_xRb_yC₆₀) [33 K], supports the interpretation that the transi-tion temperature of these fullerides is determined mainly by the density of states at the Fermi level.

Original language	English
Pages (from-to)	222-223
Number of pages	2
Journal	Nature
Volume	352
Issue number	6332
DOIs	https://doi.org/10.1038/352222a0
Publication status	Published - 1991
Externally published	Yes

ASJC Scopus subject areas

General

Access to Document

10.1038/352222a0

Cite this

@article{fa810657386a470285a1aa7b8fb97269,

title = "Superconductivity at 33 K in CsxRbyC60",

abstract = "THE synthesis of macroscopic quantities1,2 of the fullerenes C60 and C70 has led to discoveries of several unusual properties3-10, in particular the high conductivity3 and superconductivity4-6 of alkali-metal-doped phases. Here we report a superconducting phase of C60 doped with caesium and rubidium, which has the highest transition temperature Tc and the largest diamagnetic shielding found so far for the alkali-metal-doped compounds. CSxRbyC60 (x = 2 and y = 1 in the dopant feed) exhibits a Tc of 33 K and a diamagnetic shielding of over 60%. This is also the highest Tc yet observed in a molecular superconductor. The vari-ation of Tc with dopant, Tc (KxC60) [18 K]< Tc (RbxC60) [∼29 K]< Tc (CsxRbyC60) [33 K], supports the interpretation that the transi-tion temperature of these fullerides is determined mainly by the density of states at the Fermi level.",

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

year = "1991",

doi = "10.1038/352222a0",

language = "English",

volume = "352",

pages = "222--223",

journal = "Nature",

issn = "0028-0836",

publisher = "Nature Publishing Group",

number = "6332",

}

TY - JOUR

T1 - Superconductivity at 33 K in CsxRbyC60

AU - Tanigaki, K.

AU - Ebbesen, T. W.

AU - Saito, S.

AU - Mizuki, J.

AU - Tsai, J. S.

AU - Kubo, Y.

AU - Kuroshima, S.

PY - 1991

Y1 - 1991

N2 - THE synthesis of macroscopic quantities1,2 of the fullerenes C60 and C70 has led to discoveries of several unusual properties3-10, in particular the high conductivity3 and superconductivity4-6 of alkali-metal-doped phases. Here we report a superconducting phase of C60 doped with caesium and rubidium, which has the highest transition temperature Tc and the largest diamagnetic shielding found so far for the alkali-metal-doped compounds. CSxRbyC60 (x = 2 and y = 1 in the dopant feed) exhibits a Tc of 33 K and a diamagnetic shielding of over 60%. This is also the highest Tc yet observed in a molecular superconductor. The vari-ation of Tc with dopant, Tc (KxC60) [18 K]< Tc (RbxC60) [∼29 K]< Tc (CsxRbyC60) [33 K], supports the interpretation that the transi-tion temperature of these fullerides is determined mainly by the density of states at the Fermi level.

AB - THE synthesis of macroscopic quantities1,2 of the fullerenes C60 and C70 has led to discoveries of several unusual properties3-10, in particular the high conductivity3 and superconductivity4-6 of alkali-metal-doped phases. Here we report a superconducting phase of C60 doped with caesium and rubidium, which has the highest transition temperature Tc and the largest diamagnetic shielding found so far for the alkali-metal-doped compounds. CSxRbyC60 (x = 2 and y = 1 in the dopant feed) exhibits a Tc of 33 K and a diamagnetic shielding of over 60%. This is also the highest Tc yet observed in a molecular superconductor. The vari-ation of Tc with dopant, Tc (KxC60) [18 K]< Tc (RbxC60) [∼29 K]< Tc (CsxRbyC60) [33 K], supports the interpretation that the transi-tion temperature of these fullerides is determined mainly by the density of states at the Fermi level.

UR - http://www.scopus.com/inward/record.url?scp=0026192636&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026192636&partnerID=8YFLogxK

U2 - 10.1038/352222a0

DO - 10.1038/352222a0

M3 - Article

AN - SCOPUS:0026192636

SN - 0028-0836

VL - 352

SP - 222

EP - 223

JO - Nature

JF - Nature

IS - 6332

ER -

Superconductivity at 33 K in Cs_xRb_yC₆₀

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this