Pressure-Induced Superconductivity in Sc to 74 GPa

Details Pressure-Induced Superconductivity in Sc to 74 GPa Pressure-Induced Superconductivity in Sc to 74 GPa

2007-03-27

arxiv.org/abs/cond-mat/0703730v2

Phys. Rev. B 76, 012505 (2007)

Physics

Condensed Matter

Superconductivity

to be published in Phys. Rev. B (Brief Reports)

Scientific paper

10.1103/PhysRevB.76.012505

Using a diamond anvil cell with nearly hydrostatic helium pressure medium we have significantly extended the superconducting phase diagram Tc(P) of Sc, the lightest of all transition metals. We find that superconductivity is induced in Sc under pressure, Tc increasing monotonically to 8.2 K at 74.2 GPa. The Tc(P) dependences of the trivalent d-electron metals Sc, Y, La, and Lu are compared and discussed within a simple s-d charge transfer framework.

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