Hydrogen-Induced Glasslike Specific-Heat Anomaly in Superconducting Crystalline Nb
- 8 November 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 49 (19) , 1423-1426
- https://doi.org/10.1103/physrevlett.49.1423
Abstract
Low-temperature specific-heat measurements (0.06-2 K) on a superconducting polycrystalline Nb alloy show an anomaly in the presence of interstitial H and D (up to 3 at.%). The excess specific heat is roughly linear in temperature, indicating the existence of a glasslike low-energy excitation spectrum. The results raise the question as to what extent previously observed low-temperature anomalies in metallic glasses may be due to H contamination.
Keywords
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