Nicklas, M., Steglich, F., Knolle, J., Eremin, I., Lackner, R., & Bauer, E. (2010). Pair breaking by nonmagnetic impurities in the noncentrosymmetric superconductor CePt₃Si. Physical Review B, 81(180511). https://doi.org/10.1103/physrevb.81.180511
E138-03 - Forschungsbereich Functional and Magnetic Materials
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Journal:
Physical Review B
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ISSN:
2469-9950
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Date (published):
21-May-2010
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Number of Pages:
4
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Publisher:
AMER PHYSICAL SOC
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Peer reviewed:
Yes
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Keywords:
Condensed Matter Physics; Electronic, Optical and Magnetic Materials
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Abstract:
We have studied the effect of Ge substitution and pressure on the heavy-fermion superconductor CePt3Si. Ge substitution on the Si site acts as negative chemical pressure leading to an increase in the unit-cell volume but also introduces chemical disorder. We carried out electrical resistivity and ac heat-capacity experiments under hydrostatic pressure on CePt3Si1−xGex (x=0,0.06). Our experiments show that the suppression of superconductivity in CePt3Si1−xGex is mainly caused by the scattering potential, rather than volume expansion, introduced by the Ge dopants. The antiferromagnetic order is essentially not affected by the chemical disorder.
