Pronounced Isotope Effect in the Superconductivity of ${HfV}_{2}$ Containing Hydrogen (Deuterium)

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22 November 1976

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 37 (21) , 1410-1413
DOI:10.1103/physrevlett.37.1410

Abstract

Superconducting transition temperatures of

Hf V_{2} H_{x}

and

Hf V_{2} D_{x}

have been measured in the composition ranges

x = 0 - 1.5

and

x = 0 - 1.0

, respectively. Hydrogen or deuterium absorption is found to decrease

T_{c}

of

{HfV}_{2}

. Pronounced isotope effects have been observed. At

x = 1

, hydrogen absorption reduces

T_{c}

by 4.8 K while deuterium absorption reduces

T_{c}

by 6.9 K with respect to

{HfV}_{2}

.

Keywords

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