Cluster- and energy-separated extreme states in a synthesized superatomic solid

Li, Chaoyu; Han, Shengru; Liu, Zhifeng; Zhao, Jijun

doi:10.1103/physrevb.105.115132

Cited by 3 publications

(1 citation statement)

References 68 publications

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“…Compared with conventional atomic crystals, cluster-assembly provides unlimited possibilities to create superatomic crystals with designated symmetries and electronic characteristics. A variety of cluster-assembled crystals with collective quantum phenomenon have been obtained in laboratory, such as the ionic solids formed by C 60 and metal chalcogenide clusters that simultaneously host Dirac states and a flat band 31,32 , and the layered superatomic crystal of Au 6 Te 12 Se 8 cubes carrying interweaved charge density wave (CDW) and polarized charge orders 33 . Moreover, the noncovalent intercube quasibonds of Au 6 Te 12 Se 8 initiate a competition between CDW and superconducting phases in an ultra-narrow pressure range 34,35 .…”

Section: Introductionmentioning

confidence: 99%

Cluster-assembled superatomic crystals for chirality-dependent charge-to-spin conversion

Zhao,

Guo

et al. 2023

npj Quantum Mater.

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In chiral materials, spins and chirality are coupled via spin-orbit interaction, provoking a fast-growing field of chiral spintronics. Compared with the widely explored chiral molecules, exploration of chirality-dependent spin effects in crystals and supramolecules remain limited. Here we assemble chiral superatomic crystals MXTe4 (M = transition metal; X = Ga or Ge) using telluride tetrahedra clusters as building blocks. Distinct from atomic crystals, these assembled monolayers have tunable symmetries and electronic characteristics by tilting the tetrahedral units through the variation of inter-cluster interaction. Dresselhaus-type spin textures and anisotropic spin Hall effect with inversed sign of spin current under opposite geometrical handedness are demonstrated in these chiral monolayers by symmetry analysis and verified by ab initio calculations. These results provide an innovative paradigm for assembling superatomic crystals with designated symmetry and hierarchical structures to access the chirality-driven quantum effects.

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Section: Introductionmentioning

confidence: 99%

Cluster-assembled superatomic crystals for chirality-dependent charge-to-spin conversion

Zhao,

Guo

et al. 2023

npj Quantum Mater.

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h-B12: A cluster-based two-dimensional honeycomb semiconductor

Li,

Qiu,

Liu

et al. 2024

Applied Physics Letters

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Icosahedral B12 serves as a fundamental building block for a variety of boron allotropes and plays a crucial role in enhancing the stability of fullerene-like boron nanoclusters. However, progress in the development of two-dimensional (2D) functional assemblies made from icosahedral B12 has been limited. In this context, we propose a 2D semiconducting boron allotrope (h-B12) using icosahedral B12 as a building block. This structure features a stable honeycomb lattice, with its unit cell comprising two mirror-symmetric icosahedral B12 clusters. The results of first-principles calculations indicate that the band structure exhibits Dirac cones and a relatively high group velocity, similar to graphene. Additionally, it is found to be a material with a negative Poisson's ratio and a relatively low Young's modulus. Finally, our calculations reveal that the zigzag nanoribbon constructed from h-B12 displays prominent edge states at both edges, indicating that this structure represents a potential topological electronic material. Our findings shed light on the design and construction of nano-electronic materials via cluster assembly.

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Assembly-inspired multiferroicity with nontrivial Chern insulating phase from exohedral metallofullerenes

Huang,

Xiong,

Zhou

et al. 2024

The Journal of Chemical Physics

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Fullerene-assembled low-dimensional materials have been experimentally realized in polymorphic forms and have attracted significant interest very recently. Here, we predict a two-dimensional (2D) honeycomb lattice material TM2(C60)3 (TM = Cr, Mo, and W) assembled from exohedral metallofullerene clusters TM(C60)3 that could exhibit planar triangular geometries. According to first-principles calculations combined with Monte Carlo simulations, we suggest that these 2D assembled materials exhibit various exotic physical properties, including ferromagnetism, ferroelectricity, and quantum anomalous Hall effect. Interestingly, mechanical strains could effectively tune their magnetic moments and switch the conducting spin channel of the Dirac bands at the Fermi level. Our work provides a new cluster-assembly design strategy toward cluster-assembled 2D materials based on fullerene characters.

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Cluster- and energy-separated extreme states in a synthesized superatomic solid

Cited by 3 publications

References 68 publications

Cluster-assembled superatomic crystals for chirality-dependent charge-to-spin conversion

Cluster-assembled superatomic crystals for chirality-dependent charge-to-spin conversion

h-B12: A cluster-based two-dimensional honeycomb semiconductor

Assembly-inspired multiferroicity with nontrivial Chern insulating phase from exohedral metallofullerenes

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