Spin Density Wave Driven by Quadrupolar Kondo Effect in Two-channel Kondo Lattice

Spin Density Wave Driven by Quadrupolar Kondo Effect in Two-channel Kondo Lattice
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两通道近藤晶格中四极近藤效应驱动的自旋密度波

DOI:
10.1143/jpsjs.80sa.sa135
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发表时间:
2011
期刊:
Journal of Physical Society of Japan
影响因子:
--
通讯作者:
星野晋太郎
星野晋太郎
中科院分区:
--
文献类型:
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作者:
星野晋太郎;大槻純也;倉本義夫;星野晋太郎

文献摘要

相似文献

在双通道近藤晶格中发现了一种新的磁性,其中每个非克雷默重态通过轨道交换与两个导带耦合。四极近藤效应导致四分之一填充带的SDW状态,即每个位点有一个传导电子。这个顺序可以从j的强耦合极限来理解。利用连续时间蒙特卡罗方法结合有限温度下的DMFT,在j -t平面上构造了四分之一填充情况的相图。
A new type of magnetism is found in the two-channel Kondo lattice where each non-Kramers doublet is coupled with two conduction bands by the orbital exchangeJ. The quadrupolar Kondo effect leads to an SDW state in the case of quarter filled bands, i.e., one conduction electron per site. This order is understood from the strong coupling limit with respect toJ. Using the continuous-time Monte Carlo method combined with the DMFT at finite temperatureT, the phase diagram is constructed in theJ–Tplane for the quarter filled case.