UGe 2 : A ferromagnetic spin-triplet superconductor
UGe 2 : A ferromagnetic spin-triplet superconductor
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DOI：
10.1103/physrevb.63.144519
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发表时间：
2001-03
影响因子：
3.7
通讯作者：
A. Huxley;I. Sheikin;E. Ressouche;N. Kernavanois;D. Braithwaite;R. Calemczuk;J. Flouquet
中科院分区：
文献类型：
--
作者：
A. Huxley;I. Sheikin;E. Ressouche;N. Kernavanois;D. Braithwaite;R. Calemczuk;J. Flouquet
大量的财产我们还观察到的演化与压力的磁秩序的中子散射，并发现，铁磁成分的顺序仍然存在于压力和温度，超导性被发现。在电阻率测量，我们确定了一个额外的过渡内的铁磁状态。这种转变的特征温度Tx随压力降低，并在接近超导性最强的压力Px时消失。有证据表明，这种转变也是由磁场引起的压力在Px以上。定性地解释了在13.5kbar压力下观察到的有场超导的反常重入行为。这些结果表明，在Px的转变是错综复杂的超导电性的外观，这可以解释为什么超导性显然是局限于铁磁相。
a bulk property. We also observe the evolution with pressure of the magnetic order by neutron scattering and find that the ferromagnetic component of the order is still present at a pressure and temperature where superconductivity is found. In resistivity measurements we identify an additional transition within the ferromagnetic state. The characteristic temperature of this transition, Tx , decreases with pressure and disappears at a pressure Px close to the pressure at which the superconductivity is strongest. Evidence is presented that this transition is also induced by a magnetic field at pressures just above Px . An observed unusual reentrant behavior of the superconductivity with field at a pressure of 13.5 kbar is then qualitatively explained. These results suggest that the transition at Px is intricately related to the appearance of superconductivity, which could explain why the superconductivity is apparently confined to the ferromagnetic phase.