Recent advances in the magnetism and superconductivity of heavy fermion systems
Recent advances in the magnetism and superconductivity of heavy fermion systems
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DOI：
10.1143/jpsj.73.769
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发表时间：
2004-04
影响因子：
1.7
通讯作者：
Y. Ōnuki;Y. Ōnuki;R. Settai;K. Sugiyama;T. Takeuchi;Tatsuo C. Kobayashi;Y. Haga;E. Yamamoto
中科院分区：
文献类型：
--
作者：
Y. Ōnuki;Y. Ōnuki;R. Settai;K. Sugiyama;T. Takeuchi;Tatsuo C. Kobayashi;Y. Haga;E. Yamamoto
我们介绍了稀土和铀化合物的磁性和超导性的最新进展。重费米子是在这些化合物中的RKKY相互作用和近藤效应相互竞争的基础上形成的。对这些化合物施加压力有助于控制反铁磁体cerh2si2和cerh5以及铁磁体uge2中的电子态。发现四极相互作用或四极近藤效应是prfe4p12中重费米子的原因。证明了CeCoIn 5和CeRhIn 5在量子临界点附近的超导性，UGe 2中铁磁性和超导性共存，PrOs 4 Sb 12中基于四极波动的超导性，以及超导转变温度与电子态准二维的关系。
We present recent advances in the magnetism and superconductivity of rare earth and uranium compounds. Heavy fermions are formed on the basis of the competition between the RKKY interaction and the Kondo effect in these compounds. The application of pressure to these compounds is useful to control the electronic states in the antiferromagnets CeRh 2 Si 2 and CeRhIn 5 , and the ferromagnet UGe 2 . The quadrupole interaction or the quadrupole Kondo effect is found to be responsible for heavy fermions in PrFe 4 P 12 . A rich variety of superconducting properties are demonstrated: superconductivity of CeCoIn 5 and CeRhIn 5 in the vicinity of a quantum critical point, coexistence of ferromagnetism and superconductivity in UGe 2 , and superconductivity based on the quadrupole fluctuations in PrOs 4 Sb 12 , together with the relation between the superconducting transition temperature and the quasi-two dimensionality of the electronic states.