June 2026

Journal

Collinear ferromagnetism with reduced moment length in kagome magnet Nd3⁢Ru4⁢Al12

By:
Ishihara, Yuki; Nakano, Ryota; Yamada, Rinsuke; Nomoto, Takuya; Baral, Priya; Hirschmann, Moritz; Gautam, Kamini; Kolincio, Kamil; Kikkawa, Akiko; Aji, Seno; Saitoh, Hiraku; Matsuda, Masaaki ; Taguchi, Yasujiro; Arima, Taka-hisa; Tokura, Yoshinori; Nakajima, Taro; Hirschberger, Max
Journal Name:
Physical Review B
Page Number:
214410
Volume:
113
Publication Date:
June 4, 2026
View DOI Listing:
https://doi.org/10.1103/9pvl-33xc

Abstract

We determine the magnetic ground state of the kagome lattice magnet Nd3⁢Ru4⁢Al12 by single-crystal neutron diffraction, supported by experiments with polarized neutrons. We identify this material as a collinear ferromagnet (“hex-FM”) with uniform moment length and ordering vector 𝑸=0, in contrast to a previous, seminal report that proposed unequal moment lengths on two Nd sites, here called the “ortho-FM” state. Our analysis of the flipping ratio in polarized neutron scattering is consistent with the hex-FM state. The results provide a microscopic basis for understanding the large fluctuation-induced Hall and Nernst responses near 𝑇C≈41K, as previously reported for Nd3⁢Ru4⁢Al12.


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