Continuous transition between antiferromagnetic insulator and paramagnetic metal in the pyrochlore iridate Eu2Ir2O7
Open accessAbstract
Our single crystal study of the magnetothermal and transport properties of the pyrochlore iridate Eu${}_{2}$Ir${}_{2}$O${}_{7}$ reveals a continuous phase transition from a paramagnetic metal to an antiferromagnetic insulator for a sample with stoichiometry within $\ensuremath{\sim}$1$%$ resolution. The insulating phase has strong proximity to an antiferromagnetic semimetal, which is stabilized by several $%$ level of the off-stoichiometry. Our observations suggest that in addition to electronic correlation and spin-orbit coupling the magnetic order is essential for opening the charge gap.
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Magnetically ordered pyrochlore iridates such as A=Eu and A=Nd are insulating at low temperatures in clean samples.
“The magnetically ordered pyrochlores, such as A=Eu, Nd are seen, in clean samples, to be insulating at low temperatures (Ishikawa et al. , 2012; Tafti et al. , 2012; Tian et al. , 2016; Ueda et al. , 2012, 2015b).”
From Weyl and Dirac semimetals in three-dimensional solids (2018) · cites this paper as Ishikawa et al., 2012
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References 38 · Cited by 117
- Authors
- Ishikawa, J. J., O'Farrell, E. C. T., & Nakatsuji, S.
- Affiliations
- The Institute for Solid State Physics, The University of Tokyo (JP)
- ORCID
- Nakatsuji, Satoru
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2012-06-12
- Volume
- 85
- Issue
- 24
- ISSN
- 1098-0121 (ISSN-L)
- 1550-235X
- OpenAlex
- W2025756543
- Cited by
- 117
- References
- 38
- Citations by year
- 2026: 2 · 2025: 4 · 2024: 8 · 2023: 4 · 2022: 5 · 2021: 6 · 2020: 16 · 2019: 7 · 2018: 14 · 2017: 11 · 2016: 7 · 2015: 14 · 2014: 8 · 2013: 9 · 2012: 1
- FWCI
- 6.96
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review B (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Funders
- Japan Society for the Promotion of Science
- Topics
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Advanced Condensed Matter Physics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Physics of Superconductivity and Magnetism
- Keywords
- Eu2Ir2O7, pyrochlore iridates, antiferromagnetic insulator, paramagnetic metals, second-order phase transition, magnetothermal properties, electrical transport, antiferromagnetic semimetal, off-stoichiometry, charge gap, spin-orbit coupling, electron correlation, magnetic ordering
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