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Pressure dependence of the superconducting transition temperatures of CeRu3B2 and CeOs3B2

✍ Scribed by K.S. Athreya; R.N. Shelton

Publisher: Elsevier Science
Year: 1985
Weight: 254 KB
Volume: 135
Category: Article
ISSN: 0378-4363
DOI: 10.1016/0378-4363(85)90519-4

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✦ Synopsis

Results are reported from an investigation of the effect of pressure on the superconducting transition temperature T~ in the two CeTaB z (T = Ru, Os) compounds. In CeOs2B 2, the ambient pressure T c of 3.34 K is depressed linearly by pressure up to 65kbar with dTc/dp=-7mK/kbar. In contrast, the isoelectronic CeRu3B2, with a T c of 1.10K, shows an initial enhancement of T~ by pressure with dTc/d p = 20 mK/kbar up to about 30 kbar. T c goes through a maximum of 1.72 K at about 33 kbar, after which additional pressure causes a decline in T c. An analysis in terms of the lattice and electronic contributions to these distinctly different pressure dependences is presented.

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