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18 April 2024 |
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Article overview
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Field Re-entrant Superconductivity Induced by the Enhancement of Effective Mass in URhGe | | Atsushi Miyake
; Dai Aoki
; Jacques Flouquet
; | | Date: |
19 Aug 2008 | | Abstract: | High quality single crystals of a ferromagnetic superconductor URhGe were
successfully grown. The electrical resistivity was measured for the field along
b-axis in the orthorhombic crystal structure in order to study precisely its
field re-entrant superconductivity which occurs in the vicinity of the field
$H_{
m R}$, where the easy magnetization switches from $c$ to b-axis. The
field re-entrant superconductivity of URhGe is analyzed with special focus on
its dependence with the value of residual resistivity $
ho_0$ and the
coefficient $A$ of $T^2$ term of the resistivity. The experimental results are
well explained by a crude model related with the field dependence of the
effective mass $m^ast$, where the corresponding critical temperature
$T_{mathrm{sc}}(m^ast)$ and the upper critical field $H_{
m c2}$ are
strongly enhanced. Discussion is made on the interplay between magnetic and
superconducting phase diagram as well as the link between $T_{mathrm{sc}}$ and
$A$ in other heavy fermion superconductors. | | Source: | arXiv, 0808.2500 | | Services: | Forum | Review | PDF | Favorites | |
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