Partial flux ordering and thermal Majorana metals in higher-order spin liquids
In frustrated quantum magnetism, chiral spin liquids are a particularly intriguing subset of quantum spin liquids in which the fractionalized parton degrees of freedom form a Chern insulator. Here we study an exactly solvable spin-3/2 model, which harbors not only chiral spin liquids but also spin l...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-10-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.043159 |
| _version_ | 1797211203678765056 |
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| author | Tim Eschmann Vatsal Dwivedi Henry F. Legg Ciarán Hickey Simon Trebst |
| author_facet | Tim Eschmann Vatsal Dwivedi Henry F. Legg Ciarán Hickey Simon Trebst |
| author_sort | Tim Eschmann |
| collection | DOAJ |
| description | In frustrated quantum magnetism, chiral spin liquids are a particularly intriguing subset of quantum spin liquids in which the fractionalized parton degrees of freedom form a Chern insulator. Here we study an exactly solvable spin-3/2 model, which harbors not only chiral spin liquids but also spin liquids with higher-order parton band topology—a trivial band insulator, a Chern insulator with gapless chiral edge modes, and a second-order topological insulator with gapless corner modes. With a focus on the thermodynamic precursors and thermal phase transitions associated with these distinct states, we employ numerically exact quantum Monte Carlo simulations to reveal a number of unconventional phenomena. This includes heightened thermal stability of the ground state phases, the emergence of a partial flux ordering of the associated Z_{2} lattice gauge field, and the formation of a thermal Majorana metal regime extending over a broad temperature range. |
| first_indexed | 2024-04-24T10:22:46Z |
| format | Article |
| id | doaj.art-589e50f3c63d4cc4b515c82fa947a9e1 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:22:46Z |
| publishDate | 2020-10-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-589e50f3c63d4cc4b515c82fa947a9e12024-04-12T17:03:13ZengAmerican Physical SocietyPhysical Review Research2643-15642020-10-012404315910.1103/PhysRevResearch.2.043159Partial flux ordering and thermal Majorana metals in higher-order spin liquidsTim EschmannVatsal DwivediHenry F. LeggCiarán HickeySimon TrebstIn frustrated quantum magnetism, chiral spin liquids are a particularly intriguing subset of quantum spin liquids in which the fractionalized parton degrees of freedom form a Chern insulator. Here we study an exactly solvable spin-3/2 model, which harbors not only chiral spin liquids but also spin liquids with higher-order parton band topology—a trivial band insulator, a Chern insulator with gapless chiral edge modes, and a second-order topological insulator with gapless corner modes. With a focus on the thermodynamic precursors and thermal phase transitions associated with these distinct states, we employ numerically exact quantum Monte Carlo simulations to reveal a number of unconventional phenomena. This includes heightened thermal stability of the ground state phases, the emergence of a partial flux ordering of the associated Z_{2} lattice gauge field, and the formation of a thermal Majorana metal regime extending over a broad temperature range.http://doi.org/10.1103/PhysRevResearch.2.043159 |
| spellingShingle | Tim Eschmann Vatsal Dwivedi Henry F. Legg Ciarán Hickey Simon Trebst Partial flux ordering and thermal Majorana metals in higher-order spin liquids Physical Review Research |
| title | Partial flux ordering and thermal Majorana metals in higher-order spin liquids |
| title_full | Partial flux ordering and thermal Majorana metals in higher-order spin liquids |
| title_fullStr | Partial flux ordering and thermal Majorana metals in higher-order spin liquids |
| title_full_unstemmed | Partial flux ordering and thermal Majorana metals in higher-order spin liquids |
| title_short | Partial flux ordering and thermal Majorana metals in higher-order spin liquids |
| title_sort | partial flux ordering and thermal majorana metals in higher order spin liquids |
| url | http://doi.org/10.1103/PhysRevResearch.2.043159 |
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