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[en] We have carried out measurements of superconducting critical current density Jc of the ferromagnetic-superconductor UGe2 near the superconducting transition temperature Tsc. In order to reduce Joule heating during the measurement, we have fabricated low-resistivity contacts for the current leads with the net resistance of 100 μΩ. At pressure, p = 1.25 GPa, Jc was measured down to T/Tsc = 0.85 (Tsc = 0.545 K). Jc increases with decreasing temperature, resulting in 6.0 × 104 A/m2 at T/Tsc = 0.85. Temperature dependence of Jc can be compared with that proposed for the ordinary type II superconductor in the mixed state. (author)
Source
Hotta, Takashi (ed.) (Tokyo Metropolitan University, Hachioji, Tokyo (Japan)); Katsufuji, Takuro (ed.) (Waseda University, Tokyo (Japan)); [1157 p.]; ISBN 978-4-89027-142-9; 
; 2020; p. 011064.1-011064.6; SCES2019: International conference on strongly correlated electron systems; Okayama (Japan); 23-28 Sep 2019; Available from DOI: https://doi.org/10.7566/JPSCP.30.011064; 10 refs., 3 figs.
; 2020; p. 011064.1-011064.6; SCES2019: International conference on strongly correlated electron systems; Okayama (Japan); 23-28 Sep 2019; Available from DOI: https://doi.org/10.7566/JPSCP.30.011064; 10 refs., 3 figs.