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Superconductivity in diamond

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arxiv cond-mat/0404156 v1 pith:RSKLH6QA submitted 2004-04-06 cond-mat.supr-con cond-mat.mtrl-sci

E. A. Ekimov , V. A. Sidorov , E. D. Bauer , N. N. Mel'nik , N. J. Curro , J. D. Thompson , S. M. Stishov This is my paper · ORCID
classification cond-mat.supr-concond-mat.mtrl-sci
keywords superconductivitydiamondboron-dopeddiscoverymagnetictemperatureappropriatebelow
verification ladder T0 review T1 audit T2 compute T3 formal
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We report the discovery of superconductivity in boron-doped diamond synthesized at high pressure (8-9 GPa) and temperature (2,500-2,800 K). Electrical resistivity, magnetic susceptibility, specific heat, and field-dependent resistance measurements show that boron-doped diamond is a bulk, type-II superconductor below the superconducting transition temperature Tc=4 K; superconductivity survives in a magnetic field up to Hc2(0)=3.5 T. The discovery of superconductivity in diamond-structured carbon suggests that Si and Ge, which also form in the diamond structure, may similarly exhibit superconductivity under the appropriate conditions.

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