2020
DOI: 10.1088/1361-648x/ab6cc0
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Photoprotected spin Hall effect on graphene with substrate induced Rashba spin–orbit coupling

Abstract: We propose an experimental realization of the Spin Hall effect in graphene by illuminating a graphene sheet on top of a substrate with circularly polarized monochromatic light. The substrate induces a controllable Rashba type spin-orbit coupling which breaks the spin-degeneracy of the Dirac cones but it is gapless. The circularly polarized light induces a gap in the spectrum and turns graphene into a Floquet topological insulator with spin dependent edge states. By analyzing the high and intermediate frequency… Show more

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Cited by 3 publications
(4 citation statements)
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“… 395 Additionally, effective Hamiltonians within the so-called off-resonant regime enable a physical description of the spin transport by means of exactly solvable models. 396 , 397 Thus, within the Floquet formalism, it becomes possible to deal with periodically driven interactions, and consider the effects of radiation on bonds using the formalism of stretch engineering. Other effects seen in low-dimensional systems such as the spin ratchet effect could also be explored.…”
Section: Leveraging Chirality In the Quantum Sciencesmentioning
confidence: 99%
See 1 more Smart Citation
“… 395 Additionally, effective Hamiltonians within the so-called off-resonant regime enable a physical description of the spin transport by means of exactly solvable models. 396 , 397 Thus, within the Floquet formalism, it becomes possible to deal with periodically driven interactions, and consider the effects of radiation on bonds using the formalism of stretch engineering. Other effects seen in low-dimensional systems such as the spin ratchet effect could also be explored.…”
Section: Leveraging Chirality In the Quantum Sciencesmentioning
confidence: 99%
“…A possible means to model the photoinduced quasi-1D spin transport in the DNA sample could be achieved by using the approach given in ref , where the driven Su–Schrieffer–Heeger model of polyacetylene is explored, and it is shown that competing effects among photon assisted processes and the native topology of the undriven system lead to nontrivial Floquet topological insulating phases . Additionally, effective Hamiltonians within the so-called off-resonant regime enable a physical description of the spin transport by means of exactly solvable models. , Thus, within the Floquet formalism, it becomes possible to deal with periodically driven interactions, and consider the effects of radiation on bonds using the formalism of stretch engineering. Other effects seen in low-dimensional systems such as the spin ratchet effect could also be explored.…”
Section: Leveraging Chirality In the Quantum Sciencesmentioning
confidence: 99%
“…Floquet engineering [18], or the controlling of topological transitions using periodic drives such as light, has recently become an interesting field of study [19,20]. Starting from the work of Oka and Aoki, who discovered that applying light * awadhesh@iisc.ac.in on graphene makes it behave like a topological insulator [21], various theoretical studies [22][23][24][25][26] and experiments [27][28][29] have illustrated how topological phases can be generated by the periodic driving of systems with light. Floquet engineering provides a way of experimentally realizing topological phases, with excellent tunability.…”
Section: Introductionmentioning
confidence: 99%
“…Floquet engineering 18 , or the controlling of topological transitions using periodic drives such as light, has recently become an interesting field of study 19,20 . Starting from the work of Oka et al, who discovered that applying light on graphene makes it behave like a topological insulator 21 , various theoretical studies [22][23][24][25][26] and experiments [27][28][29] have illustrated how new topological phases can be generated by the periodic driving of systems with light. Floquet engineering provides a new way of experimentally realising novel topological phases, with excellent tunability.…”
Section: Introductionmentioning
confidence: 99%