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arXiv · 2205.09211

Electronic signatures of successive itinerant, magnetic transitions in hexagonal La2Ni7

Kyungchan Lee·Na Hyun Jo·Lin-Lin Wang·R. A. Ribeiro·Yevhen Kushnirenko·Ben Schrunk·Paul C. Canfield·Adam Kaminski
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Abstract

We use high-resolution angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT) calculations to study the electronic and magnetic properties of La2Ni7, an itinerant magnetic system with a series of three magnetic transition temperatures upon cooling, which end in a weak itinerant antiferromagnetic (wAFM) ground state. Our APRES data reveal several electron and hole pockets that have hexagonal symmetry near the $\Gamma$ point. We observe significant reconstruction of the band structure upon successive magnetic transitions at T1 = 61 K, T2 = 57 K and T3 = 42 K. The experimental data are in a reasonable agreement with DFT calculations, demonstrating their applicability to itinerant antiferromagnet systems. Our results detail the effects of magnetic ordering on the electronic structure in a Ni-based weak antiferromagnet.

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Kyungchan Lee, Na Hyun Jo, Lin-Lin Wang, R. A. Ribeiro, Yevhen Kushnirenko, Ben Schrunk, Paul C. Canfield, Adam Kaminski. 2022-05-18. Electronic signatures of successive itinerant, magnetic transitions in hexagonal La2Ni7. https://doi.org/10.1088/1361-648x/acc629

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