Pressure-induced superconductivity in a ferromagnet, UGe2: Resistivity measurements in a magnetic field

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

doi:10.1088/0953-8984/14/44/376

Pressure-induced superconductivity in a ferromagnet, UGe₂: Resistivity measurements in a magnetic field

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

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

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 > P_C 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 H_C2 is reconfirmed for H ∥ a-axis. The upper critical field of H_C2 is anisotropic: H_C2(T) exhibits positive curvature for H ∥ b-axis and H ∥ c-axis.

Original language	English
Pages (from-to)	10779-10782
Number of pages	4
Journal	Journal of Physics Condensed Matter
Volume	14
Issue number	44 SPEC ISS.
DOIs	https://doi.org/10.1088/0953-8984/14/44/376
Publication status	Published - Nov 11 2002
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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abstract = "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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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.

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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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