Frustrated kagome-lattice bilayer quantum Heisenberg antiferromagnet
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909671243120640 |
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| author | Yaremchuk, Dmytro Hutak, Taras Baliha, Vasyl Krokhmalskii, Taras Derzhko, Oleg Schnack, Jürgen Richter, Johannes |
| author_facet | Yaremchuk, Dmytro Hutak, Taras Baliha, Vasyl Krokhmalskii, Taras Derzhko, Oleg Schnack, Jürgen Richter, Johannes |
| contents | We consider the $S=1/2$ antiferromagnetic Heisenberg model on a frustrated kagome-lattice bilayer with strong nearest-neighbor interlayer coupling and examine its low-temperature magnetothermodynamics using a mapping onto a rhombi gas on the kagome lattice. Besides, we use finite-size numerics to illustrate the validity of the classical lattice-gas description. Among our findings there are i) the absence of an order-disorder phase transition and ii) the sensitivity of the specific heat at low temperatures to the shape of the system just below the saturation magnetic field even in the thermodynamic limit. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_12878 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Frustrated kagome-lattice bilayer quantum Heisenberg antiferromagnet Yaremchuk, Dmytro Hutak, Taras Baliha, Vasyl Krokhmalskii, Taras Derzhko, Oleg Schnack, Jürgen Richter, Johannes Strongly Correlated Electrons We consider the $S=1/2$ antiferromagnetic Heisenberg model on a frustrated kagome-lattice bilayer with strong nearest-neighbor interlayer coupling and examine its low-temperature magnetothermodynamics using a mapping onto a rhombi gas on the kagome lattice. Besides, we use finite-size numerics to illustrate the validity of the classical lattice-gas description. Among our findings there are i) the absence of an order-disorder phase transition and ii) the sensitivity of the specific heat at low temperatures to the shape of the system just below the saturation magnetic field even in the thermodynamic limit. |
| title | Frustrated kagome-lattice bilayer quantum Heisenberg antiferromagnet |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2504.12878 |