Controllable spin-dynamic scenarios on zigzag carbon cross structure

Liu, J.; Zhang, Yiming; Li, Chun; Jin, Wei; Lefkidis, Georgios; Hübner, Wolfgang

doi:10.1103/physrevb.106.094401

Cited by 7 publications

(8 citation statements)

References 79 publications

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“…As previously done for the zigzag carbon cross structure, 25,26 the authors obtained that using laser pulses along various directions results in substantial differences in the spindynamic processes. We also investigate the influence of the propagation direction of the laser pulse by altering their polar angle y and the azimuthal angle f in spherical coordinates on the spin dynamics scenarios.…”

Section: Impact Of the Polar And Azimuthal Angles Of The Laser Pulse ...mentioning

confidence: 63%

“…Also, 6-31G is the basis set that has already been successfully applied in our previous investigations. 25 Ab initio calculations with different basis sets showed that the properties (geometry, frequency, etc. ) calculated with the 6-31G basis set were generally in better agreement with the experimental values.…”

Section: Computational Methods and Theorymentioning

confidence: 99%

“…Recently, Liu et et al proposed a model of an integrated logic processor created from a network of single molecular spin logic units and the connection bridges among them. 25 They systematically studied the spin-dynamics processes on two different carbon cross arrangements with two Nickel atoms (Ni) connected. Furthermore, Liu et et al studied the ultrafast laser-induced spin-dynamics scenarios on a linear zigzag carbon chain, to which two Nickel Ni atoms are connected using high-level quantum chemistry.…”

Section: Introductionmentioning

confidence: 99%

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Laser-induced ultrafast spin-transfer processes in non-linear zigzag carbon chain systems

Barhoumi,

Liu,

Lefkidis

et al. 2023

Phys. Chem. Chem. Phys.

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Section: Impact Of the Polar And Azimuthal Angles Of The Laser Pulse ...mentioning

confidence: 63%

Section: Computational Methods and Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Laser-induced ultrafast spin-transfer processes in non-linear zigzag carbon chain systems

Barhoumi,

Liu,

Lefkidis

et al. 2023

Phys. Chem. Chem. Phys.

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“…The laser-pulse parameters, namely incidence angles, amplitude, frequency, polarization, ellipticity, and chirp, are optimized with our own genetic algorithm [44]. Using such Λ-processes, the spin dynamics on numerous nanostructures, containing not only clusters [45][46][47] but also one-dimensional carbon chains [48][49][50] and 2D systems [51][52][53], has been successfully investigated and proven to be effective.…”

Section: Theory and Methodsmentioning

confidence: 99%

Designing spintronic devices in two-dimensional γ-graphyne: from ultrafast spin dynamics to logic applications

Xu(徐帅),

Xie(谢昊),

Zhang(张一鸣)

et al. 2024

J. Phys. D: Appl. Phys.

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The integration of two-dimensional (2D) materials into spintronics represents a frontier in the development of novel computational devices. In this work, by utilizing ab initio many-body theory, we investigate the spin dynamics within the Co-doped γ-graphyne structure, with a particular emphasis on the role of cobalt atoms as magnetic centers. The result reveals that each cobalt atom on the γ-graphyne hosts states with enough spin-density localization to facilitate both local spin flips and global spin transfers. The spin-dynamic processes in our study are characterized by ultrafast time scales and high fidelities, demonstrating efficient spin control in the system. Building upon these spin dynamics processes, we theoretically construct a spin-based Reset-Set (RS) latch, thus demonstrating the feasibility of sophisticated logic operations in our system. Such spin-based devices exhibit the advantages of nano-spintronics over conventional-electronic approaches, offering lower energy consumption, faster operational speeds, and greater potential for miniaturization. The results highlight the efficacy of γ-graphyne nanoflakes doped with cobalt atoms as spin-information processing units, signifying a pivotal advancement in the incorporation of graphyne-based materials into sophisticated spintronic devices. This research paves the way for their application in areas such as data storage, quantum computing, and the development of complex logic-processing architectures.

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“…From the aspect of designing future nanospintronic devices, spin transfer represents a basic information-manipulation functionality, necessary in data storage and quantum computing. − A prerequisite for spin transfer is that the spin of the initial and target states sits on different sites, generally on two different magnetic centers. However, the competition between the intrinsic nontrivial magnetism of TNF and the TM atom opens up new ways for laser-induced global spin transfer between the magnetic center and the carbon edge of the triangulene nanoflake.…”

mentioning

confidence: 99%

Unlocking Ultrafast Spin Transfer in Single-Magnetic-Center-Decorated Triangulene Systems

Xu,

Zhang,

Zang

et al. 2024

J. Phys. Chem. Lett.

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Triangulene, as a typical open-shell graphene fragment, has attracted widespread attention for nanospintronics, promising to serve as building blocks in spin-logic units. Here, using ab initio calculations, we systematically study the laser-induced ultrafast spin-dynamic processes on triangulene nanoflakes, decorated with a transition-metal atom. The results reveal a competition between the induced magnetic center and the carbon edge of the triangulene, resulting in the coexistence of dual spin-density-distribution patterns on such single-magnetic-center systems, thus opening up possibilities of complex spin-dynamic scenarios beyond the spin flip. Interestingly, no matter what direction the spin points to, it is possible to achieve reversible spin-transfer processes using the same laser pulse. Increasing the pool of elementary processes to contain not only spin-direction-dependent but also spin-direction-independent scenarios allows for more versatile spin-logic operations, including classical handling of information and quantum computing. In the present work, we suggest downscaling nanospintronic devices by integrating triangulene-based nanostructures.

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Controllable spin-dynamic scenarios on zigzag carbon cross structure

Cited by 7 publications

References 79 publications

Laser-induced ultrafast spin-transfer processes in non-linear zigzag carbon chain systems

Laser-induced ultrafast spin-transfer processes in non-linear zigzag carbon chain systems

Designing spintronic devices in two-dimensional γ-graphyne: from ultrafast spin dynamics to logic applications

Unlocking Ultrafast Spin Transfer in Single-Magnetic-Center-Decorated Triangulene Systems

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