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Spontaneous Ferromagnetism Induced Topological Transition in EuB6
- Source :
- Physical Review Letters. 129
- Publication Year :
- 2022
- Publisher :
- American Physical Society (APS), 2022.
-
Abstract
- The interplay between various symmetries and electronic bands topology is one of the core issues for topological quantum materials. Spontaneous magnetism, which leads to the breaking of time-reversal symmetry, has been proven to be a powerful approach to trigger various exotic topological phases. In this Letter, utilizing the combination of angle-resolved photoemission spectroscopy, magneto-optical Kerr effect microscopy, and first-principles calculations, we present the direct evidence on the realization of the long-sought spontaneous ferromagnetism induced topological transition in soft ferromagnetic EuB_{6}. Explicitly, we reveal the topological transition is from Z_{2}=1 topological insulator in paramagnetic state to χ=1 magnetic topological semimetal in low temperature ferromagnetic state. Our results demonstrate that the simple band structure near the Fermi level and rich topological phases make EuB_{6} an ideal platform to study the topological phase physics.
- Subjects :
- General Physics and Astronomy
Subjects
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 129
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi.dedup.....8b74cd4fceb8ff35d9cad2082b1adfa9