Enhancement of a Scalar Type of Multipole Due to Multiorbital Kondo Effect(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
Enhancement of a Scalar Type of Multipole Due to Multiorbital Kondo Effect(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
复制标题
多轨道近藤效应对标量型多极子的增强(凝聚态物质:电子结构和电、磁、光特性)
DOI:
10.1143/jpsj.76.074714
复制
发表时间:
2007
影响因子:
1.7
通讯作者:
M. Matsumoto
中科院分区:
文献类型:
--
作者:
M. Koga;M. Matsumoto
A new feature of Kondo effect due to an orbitally degenerate impurity is presented for a crystal-field singlet–triplet case in the f 2 configuration. There are two stable states at low temperatures: one is a Fermi-liquid dominated by the f 2 singlet; the other is a non-Fermi liquid stabilized by a quadrupolar type of exchange interaction between the f 2 triplet and conduction electrons. The numerical renormalization group analysis shows that the competition of both states strongly enhances a coupling of conduction electrons with a scalar type of hexadecapolar moment of the impurity state, indicating that the charge degrees of freedom is relevant for the multiorbital case. This result supports the superiority of high-rank multipoles in f -electron systems such as the Pr-based filled skutterudite compounds.
DOI:
--
发表时间:
2005
期刊:
Journal of the Physical Society of Japan 74
影响因子:
--
作者:
K.Hattori;et al.
通讯作者:
et al.
DOI:
--
发表时间:
2005
期刊:
J.Phys.Soc.Jpn. 74
影响因子:
--
作者:
Y.Aoki;H.Sugawara;H.Harima;H.Sato
通讯作者:
H.Sato