Phys. Rev. Lett. 66, 2830–2832 (1991)Superconductivity at 28 K in RbxC60Received 26 April 1991; published in the issue dated 27 May 1991 Meissner-effect and microwave-absorption measurements on bulk samples show that RbxC60 is superconducting with a maximum transition temperature of 28 K. This is a 10-K (60%) increase over the K-doped material. Only Ba0.6K0.4BiO3 and the cuprate superconductors have higher transition temperatures. © 1991 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.66.2830
DOI:
10.1103/PhysRevLett.66.2830
PACS:
74.10.+v, 61.55.-x
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