Orbital ordering of ultracold alkaline-earth atoms in optical lattices
We report on a dynamical mean-field theoretical analysis of emerging low-temperature phases in multicomponent gases of fermionic alkaline-earth(-like) atoms in state-dependent optical lattices. Using the example of ^{173}Yb atoms, we show that a two-orbital mixture with two nuclear spin components i...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-05-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.023188 |
| _version_ | 1797211479888363520 |
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| author | Andrii Sotnikov Nelson Darkwah Oppong Yeimer Zambrano Agnieszka Cichy |
| author_facet | Andrii Sotnikov Nelson Darkwah Oppong Yeimer Zambrano Agnieszka Cichy |
| author_sort | Andrii Sotnikov |
| collection | DOAJ |
| description | We report on a dynamical mean-field theoretical analysis of emerging low-temperature phases in multicomponent gases of fermionic alkaline-earth(-like) atoms in state-dependent optical lattices. Using the example of ^{173}Yb atoms, we show that a two-orbital mixture with two nuclear spin components is a promising candidate for studies of not only magnetic but also staggered orbital ordering peculiar to certain solid-state materials. We calculate and study the phase diagram of the full Hamiltonian with parameters similar to existing experiments and reveal an antiferro-orbital phase. This long-range-ordered phase is inherently stable, and we analyze the change of local and global observables across the corresponding transition lines, paving the way for experimental observations. Furthermore, we suggest a realistic extension of the system to include and probe a Jahn-Teller source field playing one of the key roles in real crystals. |
| first_indexed | 2024-04-24T10:27:09Z |
| format | Article |
| id | doaj.art-85c19ebdf13d4e7eb9a7723f03477f88 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:27:09Z |
| publishDate | 2020-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-85c19ebdf13d4e7eb9a7723f03477f882024-04-12T16:54:09ZengAmerican Physical SocietyPhysical Review Research2643-15642020-05-012202318810.1103/PhysRevResearch.2.023188Orbital ordering of ultracold alkaline-earth atoms in optical latticesAndrii SotnikovNelson Darkwah OppongYeimer ZambranoAgnieszka CichyWe report on a dynamical mean-field theoretical analysis of emerging low-temperature phases in multicomponent gases of fermionic alkaline-earth(-like) atoms in state-dependent optical lattices. Using the example of ^{173}Yb atoms, we show that a two-orbital mixture with two nuclear spin components is a promising candidate for studies of not only magnetic but also staggered orbital ordering peculiar to certain solid-state materials. We calculate and study the phase diagram of the full Hamiltonian with parameters similar to existing experiments and reveal an antiferro-orbital phase. This long-range-ordered phase is inherently stable, and we analyze the change of local and global observables across the corresponding transition lines, paving the way for experimental observations. Furthermore, we suggest a realistic extension of the system to include and probe a Jahn-Teller source field playing one of the key roles in real crystals.http://doi.org/10.1103/PhysRevResearch.2.023188 |
| spellingShingle | Andrii Sotnikov Nelson Darkwah Oppong Yeimer Zambrano Agnieszka Cichy Orbital ordering of ultracold alkaline-earth atoms in optical lattices Physical Review Research |
| title | Orbital ordering of ultracold alkaline-earth atoms in optical lattices |
| title_full | Orbital ordering of ultracold alkaline-earth atoms in optical lattices |
| title_fullStr | Orbital ordering of ultracold alkaline-earth atoms in optical lattices |
| title_full_unstemmed | Orbital ordering of ultracold alkaline-earth atoms in optical lattices |
| title_short | Orbital ordering of ultracold alkaline-earth atoms in optical lattices |
| title_sort | orbital ordering of ultracold alkaline earth atoms in optical lattices |
| url | http://doi.org/10.1103/PhysRevResearch.2.023188 |
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