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

Abstract

We combine the high-level quantum chemistry theory CCSD and EOM-CCSD together with local and global Λ processes to investigate the details of the laser-induced ultrafast spin manipulation scenarios in non-linear...

Using single and double laser pulses on the molecular Ni4@C48H36 system to design integrated nanospintronic units

“…Differently than previous work, 47 here the long-distance spin-flip processes are achieved via several corners, thus offering building blocks for additional spin-logic architectures. Overall, several possible spin-transfer processes, which are promising for prospective nano-spintronics applications, 84,120,121 are accomplished.…”

“…We show that: (i) the convergence of the coupled-cluster method with the 6-31G basis set calculation is sensitive to the C–Ni bond length. (ii) Long-distance spin transfer processes between two spin centers, which are attached to a structure containing more than three spin centers, is successfully accomplished via several corners (more than two corners as achieved in our earlier published work 47 ). (iii) The spin-based functionality on the Ni atoms can be modulated by the external magnetic field, while in the meantime, the information transfer between the Ni atoms can be preserved.…”

“…Barhoumi et al investigated the details of the laser-induced ultrafast spin manipulation scenarios in non-linear zigzag carbon chain systems Ni 2 @C 32 H 32 and Ni 2 @C 36 H 36 . 47 Afterwards, they showed that different spin-flip and long-distance spin-transfer processes on non-linear zigzag carbon chain systems can be also achieved with a single laser pulse and the transfer of the spins via the corners in two different configurations is accomplished. Magnetic-logic procedures and spin processes in three-magnetic-center systems have been designed previously.…”

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

“…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.…”