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- W2014396906 abstract "The archetypal heavy fermion superconductor CeCu2Si2 exhibits an unusual pressure–temperature (P–T) phase diagram, in which superconductivity survives over a broad region in pressure (>10 GPa) and the superconducting transition temperature Tc follows a complicated pressure dependence. To understand these unique properties, in this paper, we study a series of Ge-substituted single crystals CeCu2(Si1−xGex)2 (x = 0.01, 0.1 and 0.25). It is found that superconductivity is significantly weakened due to the elevated impurity scattering resulting from the partial Ge/Si substitution. For the sample with x = 0.01, a minimum of Tc(p) is revealed around 3 GPa. Upon further increasing x, the continuous superconducting region in the pure compounds breaks up into two disconnected superconducting domes. Superconductivity vanishes at x 0.25. These findings suggest that two different superconducting states, one magnetic and the other charge density fluctuations mediated, merge in CeCu2Si2." @default.
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- W2014396906 date "2004-10-15" @default.
- W2014396906 modified "2023-10-18" @default.
- W2014396906 title "Effect of impurity scattering on the superconductivity of CeCu2Si2" @default.
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- W2014396906 doi "https://doi.org/10.1088/1367-2630/6/1/132" @default.
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