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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2023
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2311.13641 |
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| _version_ | 1866912275360645120 |
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| author | Drechsler, Tom Vojta, Matthias |
| author_facet | Drechsler, Tom Vojta, Matthias |
| contents | The destruction of the Kondo effect in a local-moment metal can lead to a topological non-Fermi-liquid phase, dubbed fractionalized Fermi liquid, with spinon-type excitations and an emergent gauge field. We demonstrate that, if the latter displays an internal $π$-flux structure, a chiral heavy-fermion metal emerges near the Kondo-breakdown transition. Utilizing a parton mean-field theory describing the transition between a conventional heavy Fermi liquid and a U(1) fractionalized Fermi liquid, we find a novel intermediate phase near the transition whose emergent flux pattern spontaneously breaks both translation and time-reversal symmetries. This phase is an orbital antiferromagnet, and we derive a Landau-type theory which shows that such a phase generically emerges from a $π$-flux spin liquid. We discuss the relevance to pertinent experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_13641 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Emergent Chiral Metal near a Kondo Breakdown Quantum Phase Transition Drechsler, Tom Vojta, Matthias Strongly Correlated Electrons The destruction of the Kondo effect in a local-moment metal can lead to a topological non-Fermi-liquid phase, dubbed fractionalized Fermi liquid, with spinon-type excitations and an emergent gauge field. We demonstrate that, if the latter displays an internal $π$-flux structure, a chiral heavy-fermion metal emerges near the Kondo-breakdown transition. Utilizing a parton mean-field theory describing the transition between a conventional heavy Fermi liquid and a U(1) fractionalized Fermi liquid, we find a novel intermediate phase near the transition whose emergent flux pattern spontaneously breaks both translation and time-reversal symmetries. This phase is an orbital antiferromagnet, and we derive a Landau-type theory which shows that such a phase generically emerges from a $π$-flux spin liquid. We discuss the relevance to pertinent experiments. |
| title | Emergent Chiral Metal near a Kondo Breakdown Quantum Phase Transition |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2311.13641 |