2015
DOI: 10.1103/physrevb.92.165402
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Variation of the character of spin-orbit interaction by Pt intercalation underneath graphene on Ir(111)

Abstract: The modification of the graphene spin structure is of interest for novel possibilities of application of graphene in spintronics. The most exciting of them demand not only high value of spin-orbit splitting of the graphene states, but non-Rashba behavior of the splitting and spatial modulation of the spin-orbit interaction. In this work we study the spin and electronic structure of graphene on Ir(111) with intercalated Pt monolayer. Pt interlayer does not change the 9.3 × 9.3 superlattice of graphene, while th… Show more

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Cited by 25 publications
(32 citation statements)
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“…The splittings were found to be k-and energy-dependent and to reach large values for graphene, although being significantly smaller than the measured ones, shown in figures 3(a) and (b). As it is shown in Supplementary Note VI, the maximal splitting reaches ∼30 meV for the π state along the ΓK direction at k x = −0.14 Å differences between the two systems are: (i) graphene is n-or p-doped on Pb/Ir(1 1 1) or Ir(1 1 1), being the DP at about −250 meV or +150 meV, respectively, in agreement with available ARPES data [25,50,51], and (ii) overall, graphene π bands are better defined in gr/ Pb/Ir(1 1 1) as compared to gr/Ir (1 1 1), in the sense that their linear dispersion is better maintained. A stronger hybridization between graphene and Ir (1 1 1) is evident, as compared to Pb/Ir (1 1 1), simply by looking at the multiple hybridization gaps that appear in the eV energy range below the DP.…”
Section: Resultssupporting
confidence: 71%
See 1 more Smart Citation
“…The splittings were found to be k-and energy-dependent and to reach large values for graphene, although being significantly smaller than the measured ones, shown in figures 3(a) and (b). As it is shown in Supplementary Note VI, the maximal splitting reaches ∼30 meV for the π state along the ΓK direction at k x = −0.14 Å differences between the two systems are: (i) graphene is n-or p-doped on Pb/Ir(1 1 1) or Ir(1 1 1), being the DP at about −250 meV or +150 meV, respectively, in agreement with available ARPES data [25,50,51], and (ii) overall, graphene π bands are better defined in gr/ Pb/Ir(1 1 1) as compared to gr/Ir (1 1 1), in the sense that their linear dispersion is better maintained. A stronger hybridization between graphene and Ir (1 1 1) is evident, as compared to Pb/Ir (1 1 1), simply by looking at the multiple hybridization gaps that appear in the eV energy range below the DP.…”
Section: Resultssupporting
confidence: 71%
“…Pb-intercalated graphene on Ir(1 1 1) is known to show a moiré pattern with the same lateral periodicity as the well-known (9.3 × 9.3) superstructure of gr/Ir(1 1 1) [19,25,45], but with a much smaller corrugation [24] than the one observed (30 pm) on the moiré superstructure corresponding to gr/Ir(1 1 1). Below graphene, the Pb layer on Ir(1 1 1) forms three spatially separated rotational domains of a rectangular c(4 × 2) structure, commensurate with Ir(1 1 1) [24].…”
Section: Resultsmentioning
confidence: 84%
“…Similar deviations from the standard Rashba splitting of graphene bands have been recently reported in platinum intercalated devices. 23 Our study identifies the signatures of such deviations in the carriers' skew scattering properties, providing a way to probe different spin textures in transport. In this Appendix, we shall provide the details of the solution of the Lippmann-Schwinger (LS) equation.…”
Section: Discussionmentioning
confidence: 93%
“…По мере поступления углерода на поверхность островки графена растут по площади, сливаются и на конечной стадии образует сплошной слой графена, однородный по работе выхода [5]. Однако края слившихся островков сохраняют свою дефектную природу вплоть до максимально высоких температур образования, 1900 K. Видимо, именно через эти дефектны происходит проникновение многих атомов и даже молекул С 60 под графеновый слой [6][7][8][9]. Таким образом, сплошной слой графена сохраняет память о своем островковом происхождении.…”
Section: Introductionunclassified