Superconducting properties of the non-Fermi-liquid system beta-YbAlB4.
نویسندگان
چکیده
beta-YbAlB4 is the first Yb-based heavy fermion superconductor with Tc = 80 mK. Our study using high-purity single crystals reveals that strongly type-II heavy fermion superconductivity emerges from the non-Fermi-liquid state with enhanced ferromagnetic fluctuations. High sensitivity of Tc to sample purity indicates strong pair-breaking effects due to impurities, probably of nonmagnetic type, suggesting an unconventional character of the superconductivity.
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ورودعنوان ژورنال:
- Physical review letters
دوره 101 13 شماره
صفحات -
تاریخ انتشار 2008