Electronic Resource
Springer
The European physical journal
208 (1968), S. 142-158
ISSN:
1434-601X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The influence of high hydrostatic pressure on the transition temperatureT c has been investigated for the superconductors of group Va of the Periodic Table up to 45 kbars. Results obtained for tantalum, showing a negative pressure effectdT c /dp, are in good agreement with earlier observations. For vanadium and niobium, however,dT c /dp is found to be positive with an initial slope 1.76 · 10−5 °K/bar and 1.2 · 10−5 °K/bar respectively. In addition, a very strong influence onT c anddT c /dp of lattice defects produced by plastic deformation at low temperatures has been observed for V and Nb. Comparatively small increases of the residual resistance yield an increase ofT c and a pronounced minimum in theT c -p-dependence for both metals. The results are discussed with regard to possible influence of pressure on the density of states and the Debye temperature.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01380119
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