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Pressure-induced Superconductivity in a Ferromagnet UGe$_2$ -- Resistivity Measurements in Magnetic Field --

T. C. Kobayashi·K. Hanazono·N. Tateiwa·K. Amaya·Y. Haga·R. Settai·Y. Onuki
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Abstract

The electrical resistivity measurements in the magnetic field are carried out on the pressure-induced superconductor UGe$_2$. The superconductivity is observed from 1.06 to 1.44 GPa. The upper critical field of $H_{C2}$ is anisotropic where $H_{C2}(T)$ exhibits positive curvature for $H//b$ and $c$-axis. The characteristic enhancement of $H_{C2}$ is reconfirmed for $H//a$-axis. In the temperature and field dependence of resistivity at $P > P_{C}$ where the ferromagnetic ordering disappears, it is observed that the application of the external field along the {\it a}-axis increases the coefficient of Fermi liquid behavior $AT^{2}$ correspondingly to the metamagnetic transition.

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T. C. Kobayashi, K. Hanazono, N. Tateiwa, K. Amaya, Y. Haga, R. Settai, Y. Onuki. 2001-07-29. Pressure-induced Superconductivity in a Ferromagnet UGe$_2$ -- Resistivity Measurements in Magnetic Field --. https://doi.org/10.1088/0953-8984%2F14%2F44%2F376

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