Powered by Indico
v3.2.3
The competition between the Ruderman-Kittel-Kasuya-Yosida effect and Kondo effect is a central subject of periodic Anderson model. By employing the density matrix embedding theory , we study a three orbital periodic Anderson model, in which the effects of degenerate conduction orbitals via the local magnetic moments, number of electrons, and spin-spin correlation functions, are investigated. From the phase diagram at half filling, we find there exist two different anti-ferromagnetic phases and one para-magnetic phase. To explore the difference of the two anti-ferromagnetic phases, the topology of Fermi surface and the connection with standard periodic Anderson model are considered. The spin-spin correlation functions yield insight into the competition between Ruderman-Kittel-Kasuya- Yosida interaction and Kondo interaction. We further find there exist scaling transformations, by applying which to the data with different hybridization strength, all the data collapses.
2006年毕业于中国科学技术大学，并于2012年在中国科学院理论物理研究所获得博士学位。2012年-2014年在美国普林斯顿大学做博士后，2014起在北京师范大学担任讲师。主要研究兴趣是量子多体算法在凝聚态物理学中的应用，研究对象包括强关联费米子模型、量子自旋模型和经典统计模型，熟悉的算法包括张量网络态相关算法和密度矩阵嵌入理论。