Divalent Yb in the Ca3Pd4Bi8 Structure Type: Crystal Growth and Physical Properties of Yb3Pd4Bi8
Abstract
We report on the single-crystal growth, crystal structure, and physical properties of Yb3Pd4Bi8. Single crystal x-ray diffraction shows that the material crystallizes in the Ca3Pd4Bi8 structure-type at ambient conditions, described by orthorhombic symmetry Pbam. Magnetization measurements reveal a nearly isotropic diamagnetic response, indicating that Yb is stabilized in a non-magnetic divalent configuration. Electrical resistivity measurements show a metallic behavior. First-principles calculations including spin--orbit coupling describe a metal whose states at the Fermi level are dominated by Bi 6p orbitals, with a density of states within 1% of that of the isoelectronic compound Ca3Pd4Bi8, consistent with a filled and chemically inert 4f shell. They further show that the nonsymmorphic symmetry of the crystal enforces fourfold-degenerate nodal lines on the Brillouin-zone boundary, four of which cross the Fermi level and give symmetry-enforced Dirac points with a linear transverse dispersion. Despite strong metallic and covalent bonding within the Pd-Bi network, Yb3Pd4Bi8 is realized as a rare-earth analog of the Ca3Pd4Bi8 structure type with divalent Yb ions. This result offers a potential avenue to discover other rare-earth analogs within this structural family.
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BibTeX
@misc{patino2026divalent,
title = {{Divalent Yb in the Ca$_3$Pd$_4$Bi$_8$ Structure Type: Crystal Growth and Physical Properties of Yb$_3$Pd$_4$Bi$_8$}},
author = {Midori Amano Patino and Sitaram Ramakrishnan and Davide Donadio and Nils Lamouche and Elise Pachoud and Macha Meplan and Daniel Braithwaite and Jean-Pascal Brison and Gerard Lapertot and Andrea Bianchi and Georg Knebel and Valentin Taufour},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.32524},
eprint = {2610.32524},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.32524},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Divalent Yb in the Ca_3Pd_4Bi_8 Structure Type: Crystal Growth and Physical Properties of Yb_3Pd_4Bi_8
AU - Midori Amano Patino
AU - Sitaram Ramakrishnan
AU - Davide Donadio
AU - Nils Lamouche
AU - Elise Pachoud
AU - Macha Meplan
AU - Daniel Braithwaite
AU - Jean-Pascal Brison
AU - Gerard Lapertot
AU - Andrea Bianchi
AU - Georg Knebel
AU - Valentin Taufour
PY - 2026
DA - 2026/10/23
PB - arXiv
DO - 10.48550/arxiv.2610.32524
UR - https://arxiv.org/abs/2610.32524
AB - We report on the single-crystal growth, crystal structure, and physical properties of Yb_3Pd_4Bi_8. Single crystal x-ray diffraction shows that the material crystallizes in the Ca_3Pd_4Bi_8 structure-type at ambient conditions, described by orthorhombic symmetry Pbam. Magnetization measurements reveal a nearly isotropic diamagnetic response, indicating that Yb is stabilized in a non-magnetic divalent configuration. Electrical resistivity measurements show a metallic behavior. First-principles calculations including spin--orbit coupling describe a metal whose states at the Fermi level are dominated by Bi 6p orbitals, with a density of states within 1% of that of the isoelectronic compound Ca_3Pd_4Bi_8, consistent with a filled and chemically inert 4f shell. They further show that the nonsymmorphic symmetry of the crystal enforces fourfold-degenerate nodal lines on the Brillouin-zone boundary, four of which cross the Fermi level and give symmetry-enforced Dirac points with a linear transverse dispersion. Despite strong metallic and covalent bonding within the Pd-Bi network, Yb_3Pd_4Bi_8 is realized as a rare-earth analog of the Ca_3Pd_4Bi_8 structure type with divalent Yb ions. This result offers a potential avenue to discover other rare-earth analogs within this structural family.
ER -