TY - JOUR
T1 - Pressure-induced superconductivity in a ferromagnet, UGe2
T2 - Resistivity measurements in a magnetic field
AU - Kobayashi, T. C.
AU - Hanazono, K.
AU - Tateiwa, N.
AU - Amaya, K.
AU - Haga, Y.
AU - Settai, R.
AU - Onuki, Y.
N1 - Copyright:
Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.
PY - 2002/11/11
Y1 - 2002/11/11
N2 - Electrical resistivity measurements in a magnetic are carried out on UGe2 which exhibits pressure-induced superconductivity. The superconductivity is observed from 1.06 to 1.44 GPa. In the temperature and field dependences of the resistivity at P > PC where the ferromagnetic ordering disappears, it is observed that the application of an external field along the a-axis increases the coefficient A of the Fermi-liquid behaviour (∝AT2) abruptly - corresponding to the metamagnetic transition. The characteristic enhancement of HC2 is reconfirmed for H ∥ a-axis. The upper critical field of HC2 is anisotropic: HC2(T) exhibits positive curvature for H ∥ b-axis and H ∥ c-axis.
AB - Electrical resistivity measurements in a magnetic are carried out on UGe2 which exhibits pressure-induced superconductivity. The superconductivity is observed from 1.06 to 1.44 GPa. In the temperature and field dependences of the resistivity at P > PC where the ferromagnetic ordering disappears, it is observed that the application of an external field along the a-axis increases the coefficient A of the Fermi-liquid behaviour (∝AT2) abruptly - corresponding to the metamagnetic transition. The characteristic enhancement of HC2 is reconfirmed for H ∥ a-axis. The upper critical field of HC2 is anisotropic: HC2(T) exhibits positive curvature for H ∥ b-axis and H ∥ c-axis.
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U2 - 10.1088/0953-8984/14/44/376
DO - 10.1088/0953-8984/14/44/376
M3 - Article
AN - SCOPUS:0037064861
VL - 14
SP - 10779
EP - 10782
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
SN - 0953-8984
IS - 44 SPEC ISS.
ER -