Itinerant metamagnetism of CeRu2Si2:: bringing out the dead.: Comparison with the new Sr3Ru2O7 case
Itinerant metamagnetism of CeRu2Si2:: bringing out the dead.: Comparison with the new Sr3Ru2O7 case
复制标题
DOI：
10.1016/s0921-4526(02)01126-2
复制
发表时间：
2002-07-01
影响因子：
2.8
通讯作者：
Knebel, G
中科院分区：
文献类型：
--
作者：
Flouquet, J;Haen, P;Knebel, G
重点介绍了十年来在重费米子顺磁化合物 CeRu2Si2 中巡回超磁性的明确案例上实现的宏观和微观实验工作。重点研究了能带结构、交换耦合和晶格不稳定性之间的反馈。在磁场、压力和温度中进行扫描，可以感受到这个强相关电子系统的赝能隙，以及在虚拟负压下的等效 CeRu2Ge2。随着对变磁场 H-M 上方费米面的完整观测以及对 H-M 附近动态铁磁涨落的检测，一些谜团仍然存在。通过比较讨论了双层钌酸盐Sr3Ru2O7的新颖性。尽管自旋和电子维度存在差异，但还是出现了许多共同的趋势。 (C) 2002 Elsevier Science B.V. 保留所有权利。
Focus is given on the macroscopic and microscopic experimental works realized during a decade on the clear case of itinerant metamagnetism in the heavy fermion paramagnetic compound CeRu2Si2. Emphasis is made on the feedback between the band structure, the exchange coupling and the lattice instability. Sweeps in magnetic field, pressure and temperature feel the pseudogap of this strongly correlated electronic system as well as its equivalent CeRu2Ge2 at a fictitious negative pressure. Some mysteries persist as the complete observation of the Fermi surface above the metamagnetic field H-M and the detection of the dynamical ferromagnetic fluctuation near H-M. The novelty of the bilayer ruthenate Sr3Ru2O7 is discussed by comparison. Despite differences in spin and electronic dimensionality many common trends emerge. (C) 2002 Elsevier Science B.V. All rights reserved.