Fractionalized Altermagnets: from neighboring and altermagnetic spin-liquids to spin-symmetric band splitting
Fuente:
arXiv
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866908366122516480 |
|---|---|
| author | Sobral, João Augusto Mandal, Subrata Scheurer, Mathias S. |
| author_facet | Sobral, João Augusto Mandal, Subrata Scheurer, Mathias S. |
| contents | We study quantum-fluctuation-driven fractionalized phases in the vicinity of altermagnetic order. First, the long-range magnetic orders in the vicinity of collinear altermagnetism are identified; these feature a non-coplanar "orbital altermagnet" which has altermagnetic symmetries in spin-rotation invariant observables. We then describe neighboring fractionalized phases with topological order reached when quantum fluctuations destroy long-range spin order, within Schwinger-boson theory and an SU(2) gauge theory of fluctuating magnetism. Discrete symmetries remain broken in some of the fractionalized phases, with the orbital altermagnet becoming an "altermagnetic spin liquid". We compute the electronic spectral function in the doped system, which is characterized by split Fermi surfaces with preserved spin-rotation symmetry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_10949 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Fractionalized Altermagnets: from neighboring and altermagnetic spin-liquids to spin-symmetric band splitting Sobral, João Augusto Mandal, Subrata Scheurer, Mathias S. Strongly Correlated Electrons We study quantum-fluctuation-driven fractionalized phases in the vicinity of altermagnetic order. First, the long-range magnetic orders in the vicinity of collinear altermagnetism are identified; these feature a non-coplanar "orbital altermagnet" which has altermagnetic symmetries in spin-rotation invariant observables. We then describe neighboring fractionalized phases with topological order reached when quantum fluctuations destroy long-range spin order, within Schwinger-boson theory and an SU(2) gauge theory of fluctuating magnetism. Discrete symmetries remain broken in some of the fractionalized phases, with the orbital altermagnet becoming an "altermagnetic spin liquid". We compute the electronic spectral function in the doped system, which is characterized by split Fermi surfaces with preserved spin-rotation symmetry. |
| title | Fractionalized Altermagnets: from neighboring and altermagnetic spin-liquids to spin-symmetric band splitting |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2410.10949 |