The DOI matches its Crossref record; 8 of the 8 references it cites were found in a registry or an index.
Non-Hermitian perspective of the band structure in heavy-fermion systems
Open accessAbstract
We analyze a two-dimensional Kondo lattice model with special emphasis on non-Hermitian properties of the single-particle spectrum, following a recent proposal by Kozii and Fu. Our analysis based on the dynamical mean-field theory elucidates that the single-particle spectral weight shows the exceptional points (EPs). Correspondingly, the spectral weight exhibits the band touching, resulting in a structure similar to the Fermi arc. Furthermore, we find an intriguing phenomenon arising from the periodicity of the lattice. The EPs generated by two distinct Dirac points merge and change into a hybrid point, which vanishes as the exchange interaction is increased. Accordingly, the paramagnetic phase in the low-temperature region shows a significant difference from noninteracting fermions: the imaginary part of the self-energy yields the Fermi loop without any defective points.
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Cites
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Discovery of a Weyl fermion semimetal and topological Fermi arcs
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Ozawa, T., Price, H. M., Amo, A., Goldman, N., Hafezi, M., Lu, L., Rechtsman, M. C., Schuster, D., Simon, J., Zilberberg, O., et al. (2019) · Reviews of Modern Physics · doi:10.1103/revmodphys.91.015006 · Cited by 3,722
Exceptional topology of non-Hermitian systems
Bergholtz, E. J., Budich, J. C., & Kunst, F. K. (2021) · Reviews of Modern Physics · doi:10.1103/revmodphys.93.015005 · Cited by 1,711
Symmetry and Topology in Non-Hermitian Physics
Kawabata, K., Shiozaki, K., Ueda, M., & Sato, M. (2019) · Physical Review X · doi:10.1103/physrevx.9.041015 · Cited by 1,357
Topological Origin of Non-Hermitian Skin Effects
Okuma, N., Kawabata, K., Shiozaki, K., & Sato, M. (2020) · Physical Review Letters · doi:10.1103/physrevlett.124.086801 · Cited by 1,236
Second-Order Topological Phases in Non-Hermitian Systems
Liu, T., Zhang, Y.-R., Ai, Q., Gong, Z., Kawabata, K., Ueda, M., & Nori, F. (2019) · Physical Review Letters · doi:10.1103/physrevlett.122.076801 · Cited by 485
Metadata
- Authors
- Yoshida, T., Peters, R., & Kawakami, N.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2018-07-26
- Volume
- 98
- Issue
- 3
- ISSN
- 2469-9950 (ISSN-L)
- 2469-9969
- OpenAlex
- W2798943617
- Cited by
- 271
- References
- 8
- FWCI
- 18.20
- Type
- journal article
- Language
- en
- Open access
- green
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