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arXiv · 2304.04426

Nesting-driven antiferromagnetic order in Kondo lattice CePd5Al2

Chen Zhang·Ya-Hua Yuan·Jiao-Jiao Song·Jan Rusz·Yin-Zou Zhao·Qi-Yi Wu·Yu-Xia Duan·Yasmine Sassa·Oscar Tjernberg·Martin Mansson·Magnus H. Bemtsen·P. H. Tobash·Eric D. Bauer·Peter M. Oppeneer·Tomasz Durakiewicz·Jian-Qiao Meng
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Abstract

We investigated the electronic structure of the antiferromagnetic Kondo lattice CePd5Al2 using high-resolution angle-resolved photoemission spectroscopy. The experimentally determined band structure of the conduction electrons is predominated by the Pd 4d character. It contains multiple hole and electron Fermi pockets, in good agreement with density functional theory calculations. The Fermi surface is folded over Q0 = (0, 0, 1), manifested by Fermi surface reconstruction and band folding. Our results suggest that Fermi surface nesting drives the formation of antiferromagnetic order in CePd5Al2.

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Chen Zhang, Ya-Hua Yuan, Jiao-Jiao Song, Jan Rusz, Yin-Zou Zhao, Qi-Yi Wu, Yu-Xia Duan, Yasmine Sassa, Oscar Tjernberg, Martin Mansson, Magnus H. Bemtsen, P. H. Tobash, Eric D. Bauer, Peter M. Oppeneer, Tomasz Durakiewicz, Jian-Qiao Meng. 2023-04-10. Nesting-driven antiferromagnetic order in Kondo lattice CePd5Al2. https://doi.org/10.1103/physrevb.108.035108

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