Superconductivity in diamond

Details Superconductivity in diamond Superconductivity in diamond

2004-04-06

arxiv.org/abs/cond-mat/0404156v1

Nature, vol.428, 542 (2004)

Physics

Condensed Matter

Superconductivity

13 pages, 4 figures

Scientific paper

10.1038/nature02449

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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