Incipient superconductivity in TaB${}_2$

Abstract

Magnetic properties of TaB${}_2$ were studied by means of DC and AC susceptibility measurements. It has been found that the compound becomes superconducting at T${}_c$ = 9.5 K. From upper critical field measurements the superconducting parameters have been evaluated, which indicated that TaB${}_2$ is a hard type-II superconductor. Possible reasons why superconductivity has not been discovered in previous studies are briefly discussed.

3 pages, 5 figures

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