Stabilizing Itinerant Electrons in a Corner-Sharing Kagomé Oxide Nd4Os3ZnO14
Abstract
Kagome oxides provide a fertile platform for exploring exotic electronic states arising from geometrical frustration and characteristic band topology. Here, we report the synthesis of a 5d transition-metal kagome oxide, Nd4Os3ZnO14, obtained via high-temperature, high-pressure hydrothermal synthesis. Single-crystal X-ray diffraction reveals a two-dimensional kagome network formed by corner-sharing OsO6 octahedra, with a nominal osmium valence of +4.67. In-plane resistivity and hard X-ray photoelectron spectroscopy measurements indicate that the semimetallic electronic structure at room temperature evolves into a semiconducting ground state upon cooling, accompanied by a pronounced enhancement of hole mobility. Magnetic susceptibility measurements demonstrate localized Nd3+ moments without long-range magnetic order down to 2 K. The coexistence of a metallic kagome plane, strong spin-orbit coupling inherent to 5d electrons, and rare-earth magnetism establishes Nd4Os3ZnO14 as a promising platform for investigating correlated electron phenomena in kagome oxides within the itinerant regime.
Versions
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BibTeX
@misc{okuma2026stabilizing,
title = {{Stabilizing Itinerant Electrons in a Corner-Sharing Kagomé Oxide Nd4Os3ZnO14}},
author = {Ryutaro Okuma and Yuita Fujisawa and Chia-Hsiu Hsu and Keita Kojima and Daisuke Nishio-Hamane and Kazuki Sumida and Akio Kimura and Akira Yasui and Kohei Yamagami and Jun-ichi Yamaura and Yoshihiko Okamoto},
howpublished = {arXiv},
year = {2026},
month = jun,
doi = {10.48550/arxiv.2606.15774},
eprint = {2606.15774},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.15774},
}
RIS
TY - UNPB
TI - Stabilizing Itinerant Electrons in a Corner-Sharing Kagomé Oxide Nd4Os3ZnO14
AU - Ryutaro Okuma
AU - Yuita Fujisawa
AU - Chia-Hsiu Hsu
AU - Keita Kojima
AU - Daisuke Nishio-Hamane
AU - Kazuki Sumida
AU - Akio Kimura
AU - Akira Yasui
AU - Kohei Yamagami
AU - Jun-ichi Yamaura
AU - Yoshihiko Okamoto
PY - 2026
DA - 2026/06/14
PB - arXiv
DO - 10.48550/arxiv.2606.15774
UR - https://arxiv.org/abs/2606.15774
AB - Kagome oxides provide a fertile platform for exploring exotic electronic states arising from geometrical frustration and characteristic band topology. Here, we report the synthesis of a 5d transition-metal kagome oxide, Nd4Os3ZnO14, obtained via high-temperature, high-pressure hydrothermal synthesis. Single-crystal X-ray diffraction reveals a two-dimensional kagome network formed by corner-sharing OsO6 octahedra, with a nominal osmium valence of +4.67. In-plane resistivity and hard X-ray photoelectron spectroscopy measurements indicate that the semimetallic electronic structure at room temperature evolves into a semiconducting ground state upon cooling, accompanied by a pronounced enhancement of hole mobility. Magnetic susceptibility measurements demonstrate localized Nd3+ moments without long-range magnetic order down to 2 K. The coexistence of a metallic kagome plane, strong spin-orbit coupling inherent to 5d electrons, and rare-earth magnetism establishes Nd4Os3ZnO14 as a promising platform for investigating correlated electron phenomena in kagome oxides within the itinerant regime.
ER -