Spin-flop-like transition as quantum critical point in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Cs</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>RuO</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow>
Cs${}_{2}$RuO${}_{4}$ expands the celebrated family of frustrated magnets Cs${}_{2}M\phantom{\rule{0}{0ex}}{X}_{4}$ ($M$=Cu, Co; $X$=Br, Cl) into the realm of 4$d$ transition metal ions. This study uncovers an unconventional spin-flop-like transition tied to a quantum critical point, hidden inside the antiferromagnetically ordered phase. Inelastic neutron scattering reveals the magnetic Hamiltonian, which shows that the origin of this peculiar transition lies in geometric frustration of single-ion anisotropy.
Authors
- D. G. Mazzone (ORCID: https://orcid.org/0000-0002-0421-0625)
- Jakob Lass (ORCID: https://orcid.org/0000-0001-6311-9568)
- S. N. Gvasaliya (ORCID: https://orcid.org/0000-0001-7972-5909)
- A. Zheludev (ORCID: https://orcid.org/0000-0002-4972-0709)
- Z. Yan (ORCID: https://orcid.org/0000-0002-9073-6358)
- Yan Wu (ORCID: https://orcid.org/0000-0003-1566-614X)
- K. Yu. Povarov (ORCID: https://orcid.org/0000-0002-0026-743X)
- M. Zhu (ORCID: https://orcid.org/0000-0002-9751-3720)
- S. D. Nabi (ORCID: https://orcid.org/0000-0001-7964-4965)
Institutions
- Oak Ridge National Laboratory (US)
- Helmholtz-Zentrum Dresden-Rossendorf (DE)
- Paul Scherrer Institute (CH)
- ETH Zurich (CH)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2025-10-21
- DOI
- https://doi.org/10.1103/bds5-vkvm
- Primary Topic
- Advanced Condensed Matter Physics
- Type
- article
- Field-Weighted Citation Impact
- 0.00