de Haas-van Alphen effect in ZrZn2 under pressure:: Crossover between two magnetic states -: art. no. 197002
de Haas-van Alphen effect in ZrZn2 under pressure:: Crossover between two magnetic states -: art. no. 197002
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DOI：
10.1103/physrevlett.92.197002
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发表时间：
2004-05-14
影响因子：
8.6
通讯作者：
Lonzarich, GG
中科院分区：
文献类型：
--
作者：
Kimura, N;Endo, M;Lonzarich, GG
我们报告测量的de Haas-van Alphen效应在ZrZn 2流体静压下高达21千巴的居里温度消失。费米面的交换分裂行为随着磁场的增加而改变，这与高场磁化的行为定性地一致，表明两个不同的磁状态之间存在交叉。这些和以前未解释的发现可以用与铁磁超导体UGe 2的p-T-B相图定性相似的方法来理解。
We report measurements of the de Haas-van Alphen effect in ZrZn2 under hydrostatic pressures up to 21 kbar where the Curie temperature vanishes. The exchange splitting of a Fermi surface changes in behavior with increasing magnetic field, which is qualitatively consistent with the behavior of the high-field magnetization, suggesting the existence of a crossover between two distinct magnetic states. These and previously unexplained findings may be understood in terms of a p-T-B phase diagram qualitatively similar to that of the ferromagnetic superconductor UGe2.