Zigzag edge ferromagnetism of triangular-graphene-quantum-dot-like system
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arXiv
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| Format: | Preprint |
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2023
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| _version_ | 1866910565579882496 |
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| author | Han, Runze Chen, Jiazhou Zhang, Mengyue Gao, Jinze Xiong, Yicheng Pan, Yue Ma, Tianxing |
| author_facet | Han, Runze Chen, Jiazhou Zhang, Mengyue Gao, Jinze Xiong, Yicheng Pan, Yue Ma, Tianxing |
| contents | Here, the magnetic susceptibility of a triangular-graphene-quantum-dot-like system was examined by using the determinant quantum Monte Carlo method. We focused on three zigzag edge quantum dots or rings, namely, the triangular graphene quantum ring, bilayer triangular graphene quantum dot, and bilayer triangular graphene quantum ring. The triangular-graphene-quantum-dot-like system exhibited robust edge ferromagnetic behavior, which was independent of size, monolayer or bilayer, or dot or ring shape, according to the numerical results. At half filling, the edge magnetic susceptibility is increased by on-site interactions, especially in the low-temperature region. Spintronics systems may benefit from use of this system due to its robust edge ferromagnetic behavior. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_03145 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Zigzag edge ferromagnetism of triangular-graphene-quantum-dot-like system Han, Runze Chen, Jiazhou Zhang, Mengyue Gao, Jinze Xiong, Yicheng Pan, Yue Ma, Tianxing Mesoscale and Nanoscale Physics Strongly Correlated Electrons Here, the magnetic susceptibility of a triangular-graphene-quantum-dot-like system was examined by using the determinant quantum Monte Carlo method. We focused on three zigzag edge quantum dots or rings, namely, the triangular graphene quantum ring, bilayer triangular graphene quantum dot, and bilayer triangular graphene quantum ring. The triangular-graphene-quantum-dot-like system exhibited robust edge ferromagnetic behavior, which was independent of size, monolayer or bilayer, or dot or ring shape, according to the numerical results. At half filling, the edge magnetic susceptibility is increased by on-site interactions, especially in the low-temperature region. Spintronics systems may benefit from use of this system due to its robust edge ferromagnetic behavior. |
| title | Zigzag edge ferromagnetism of triangular-graphene-quantum-dot-like system |
| topic | Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2305.03145 |