Metamagnetic CeRu2Si2: New perspectives for heavy-fermion studies in high fields
Metamagnetic CeRu2Si2: New perspectives for heavy-fermion studies in high fields
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变磁 CeRu2Si2：高场重费米子研究的新视角
DOI：
10.1016/0304-8853(88)90329-0
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发表时间：
1988
影响因子：
2.7
通讯作者：
J. Voiron
中科院分区：
文献类型：
--
作者：
J. Mignot;J. Flouquet;P. Haen;F. Lapierre;L. Puech;J. Voiron
有趣的磁效应最近被报道发生在重费米子系统的正常阶段。其中包括UPt3和CeRu_2Si_2（HM = 20和8T）的变磁性质。高压磁化和磁阻，以及磁致伸缩测量已进行CeRu2Si2。磁致伸缩的数据意味着一个显着的标度行为的磁化强度作为一个函数的P，从而之间的关系HM和特征费米液体能量kBT？磁电阻表明，由比热γ（H）导出的有效质量的场增强导致了在HM处观察到的相变，其中m的临界值与压力无关。
Interesting magnetic effects have recently been reported to occur in the normal phase of heavy-fermion systems. Among them are the metamagnetic properties of UPt3and CeRu2Si2(HM= 20 and 8 T). High-pressure magnetization and magnetoresistance, as well as magnetostriction measurements have been performed on CeRu2Si2. The magnetostriction data imply a remarkable scaling behavior for the magnetization as a function ofPand thus a relation betweenHMand the characteristic Fermi-liquid energykBT∗. The magnetoresistance suggests that the field enhancement of the effective mass derived from the specific-heat γ(H) leads to the observed transition atHMfor a critical value ofm∗which is pressure independent.