The relation between Tc and anharmonicity in Sn-base A15 superconductors

G. R. Hearne; H. Pollak

doi:10.1007/BF02397514

The relation between T_c and anharmonicity in Sn-base A15 superconductors

G. R. Hearne, H. Pollak

University of the Witwatersrand

Research output: Contribution to journal › Article › peer-review

Abstract

The absolute value of the recoil-free fraction was measured accurately at three reference temperatures in the range 300 K down to 4 K, in two Sn-base A 15 superconductors with disparate superconducting properties. The higher-T_c compound Nb₃Sn (T_c≈18K) exhibits low-temperature anharmonicity; this is in contrast to the lattice-dynamics of the low-T_c isomorph V₃Sn (T_c≈4K) in which it is observed that harmonic binding of the Sn atoms is prevalent down to low temperatures. The difference in the superconducting properties of the two compounds is shown to correlate with the considerable difference in their lattice-dynamics.

Original language	English
Pages (from-to)	1071-1074
Number of pages	4
Journal	Hyperfine Interactions
Volume	70
Issue number	1-4
DOIs	https://doi.org/10.1007/BF02397514
Publication status	Published - Apr 1992
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics
Condensed Matter Physics
Physical and Theoretical Chemistry

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10.1007/BF02397514

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The relation between T_c and anharmonicity in Sn-base A15 superconductors

Abstract

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