Exotic magnetic orderings in the kagome Kondo-lattice model
We consider the Kondo-lattice model on the kagome lattice and study its weak-coupling instabilities at band filling fractions for which the Fermi surface has singularities. These singularities include Dirac points, quadratic Fermi points in contact with a flat band, and van Hove saddle points. By co...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/92274 https://orcid.org/0000-0002-0543-6298 |
| _version_ | 1826205049690259456 |
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| author | Barros, Kipton Venderbos, Jorn W. F. Chern, Gia-Wei Batista, C. D. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Barros, Kipton Venderbos, Jorn W. F. Chern, Gia-Wei Batista, C. D. |
| author_sort | Barros, Kipton |
| collection | MIT |
| description | We consider the Kondo-lattice model on the kagome lattice and study its weak-coupling instabilities at band filling fractions for which the Fermi surface has singularities. These singularities include Dirac points, quadratic Fermi points in contact with a flat band, and van Hove saddle points. By combining a controlled analytical approach with large-scale numerical simulations, we demonstrate that the weak-coupling instabilities of the Kondo-lattice model lead to exotic magnetic orderings. In particular, some of these magnetic orderings produce a spontaneous quantum anomalous Hall state. |
| first_indexed | 2024-09-23T13:05:57Z |
| format | Article |
| id | mit-1721.1/92274 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:05:57Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/922742022-09-28T11:59:50Z Exotic magnetic orderings in the kagome Kondo-lattice model Barros, Kipton Venderbos, Jorn W. F. Chern, Gia-Wei Batista, C. D. Massachusetts Institute of Technology. Department of Physics Venderbos, Jorn W. F. We consider the Kondo-lattice model on the kagome lattice and study its weak-coupling instabilities at band filling fractions for which the Fermi surface has singularities. These singularities include Dirac points, quadratic Fermi points in contact with a flat band, and van Hove saddle points. By combining a controlled analytical approach with large-scale numerical simulations, we demonstrate that the weak-coupling instabilities of the Kondo-lattice model lead to exotic magnetic orderings. In particular, some of these magnetic orderings produce a spontaneous quantum anomalous Hall state. NWO of the Netherlands Foundation for Fundamental Research on Matter (Netherlands) 2014-12-11T14:41:28Z 2014-12-11T14:41:28Z 2014-12 2014-11 2014-12-10T23:00:12Z Article http://purl.org/eprint/type/JournalArticle 1098-0121 1550-235X http://hdl.handle.net/1721.1/92274 Barros, Kipton, Jorn W. F. Venderbos, Gia-Wei Chern, and C. D. Batista. "Exotic magnetic orderings in the kagome Kondo-lattice model." Phys. Rev. B 90, 245119 (December 2014). © 2014 American Physical Society https://orcid.org/0000-0002-0543-6298 en http://dx.doi.org/10.1103/PhysRevB.90.245119 Physical Review B Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Barros, Kipton Venderbos, Jorn W. F. Chern, Gia-Wei Batista, C. D. Exotic magnetic orderings in the kagome Kondo-lattice model |
| title | Exotic magnetic orderings in the kagome Kondo-lattice model |
| title_full | Exotic magnetic orderings in the kagome Kondo-lattice model |
| title_fullStr | Exotic magnetic orderings in the kagome Kondo-lattice model |
| title_full_unstemmed | Exotic magnetic orderings in the kagome Kondo-lattice model |
| title_short | Exotic magnetic orderings in the kagome Kondo-lattice model |
| title_sort | exotic magnetic orderings in the kagome kondo lattice model |
| url | http://hdl.handle.net/1721.1/92274 https://orcid.org/0000-0002-0543-6298 |
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