The main 1/2 magnetization plateau in Shastry-Sutherland magnets: Effect of the long-range Ruderman-Kittel-Kasuya-Yosida interaction
The main 1/2 magnetization plateau in Shastry-Sutherland magnets: Effect of the long-range Ruderman-Kittel-Kasuya-Yosida interaction
复制标题
Shastry-Sutherland 磁体中的主要 1/2 磁化平台：长程 Ruderman-Kittel-Kasuya-Yosida 相互作用的影响
DOI：
10.1209/0295-5075/105/17009
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发表时间：
2014-01-01
期刊：
影响因子：
1.8
通讯作者：
Ren, Zhifeng
中科院分区：
文献类型：
--
作者：
Feng, J. J.;Huo, L.;Ren, Zhifeng
研究了拓扑上等价于Shastry-Sutherland模型的阿基米德晶格上的经典伊辛模型的有序性，以了解在稀土四硼化物如TmB 4中实验观察到的迷人的磁性。考虑了长程Ruderman-Kittel-Kasuya-Yosida（RKKY）相互作用，通过Monte Carlo模拟详细研究了磁化平台和富有序行为随费米波矢的变化.实验的1/2磁化步骤可以定性地再现，其稳定性对的变化被证实，这表明传导电子和局域化的时刻之间的耦合可能在调制这些系统的磁化行为中起着重要的作用。
The ordering of the classical Ising model on the Archimedean lattice that is topologically equivalent to the Shastry-Sutherland one is studied in order to understand the fascinating magnetic properties experimentally observed in rare-earth tetraborides such as TmB4. The long-range Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction which is expected to be predominant in these systems is taken into account, and the magnetization plateaus and rich ordering behaviors depending on the Fermi wave vector are investigated in details by Monte Carlo simulation. The experimental 1/2 magnetization step can be qualitatively reproduced and its stability against the change of is confirmed, suggesting that the coupling between conduction electrons and localized moments may play an important role in modulating the magnetization behaviors in these systems.