Dopant isotope effect on superconductivity in Rb3C60

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

doi:10.1016/0921-4534(92)90523-F

Dopant isotope effect on superconductivity in Rb₃C₆₀

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

Research output: Contribution to journal › Article

30 Citations (Scopus)

Abstract

In order to distinguish between the role of intra- and inter-molecular phonons in the mechanism of C₆₀ superconductors, the dopant isotope effect has been studied for the Rb₃C₆₀ superconductor using three different samples: ⁸⁵Rb, ⁸⁷Rb and natural Rb isotopic composition. Unlike the carbon isotope effect, changing the mass of the Rb dopant does not change the superconductive onset temperature T_c of the material beyond experimental error. From these results it is concluded that the active phonons in the superconductivity are of intra-molecular and not of inter-molecular nature.

Original language	English
Pages (from-to)	163-166
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	203
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(92)90523-F
Publication status	Published - 1992 Dec 1
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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Ebbesen, T. W., Tsai, J. S., Tanigaki, K., Hiura, H., Shimakawa, Y., Kubo, Y., Hirosawa, I., & Mizuki, J. (1992). Dopant isotope effect on superconductivity in Rb₃C₆₀. Physica C: Superconductivity and its applications, 203(1-2), 163-166. https://doi.org/10.1016/0921-4534(92)90523-F

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abstract = "In order to distinguish between the role of intra- and inter-molecular phonons in the mechanism of C60 superconductors, the dopant isotope effect has been studied for the Rb3C60 superconductor using three different samples: 85Rb, 87Rb and natural Rb isotopic composition. Unlike the carbon isotope effect, changing the mass of the Rb dopant does not change the superconductive onset temperature Tc of the material beyond experimental error. From these results it is concluded that the active phonons in the superconductivity are of intra-molecular and not of inter-molecular nature.",

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AU - Ebbesen, T. W.

AU - Tsai, J. S.

AU - Tanigaki, K.

AU - Hiura, H.

AU - Shimakawa, Y.

AU - Kubo, Y.

AU - Hirosawa, I.

AU - Mizuki, J.

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AB - In order to distinguish between the role of intra- and inter-molecular phonons in the mechanism of C60 superconductors, the dopant isotope effect has been studied for the Rb3C60 superconductor using three different samples: 85Rb, 87Rb and natural Rb isotopic composition. Unlike the carbon isotope effect, changing the mass of the Rb dopant does not change the superconductive onset temperature Tc of the material beyond experimental error. From these results it is concluded that the active phonons in the superconductivity are of intra-molecular and not of inter-molecular nature.

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