Ordered Vacancy Network Induced by the Growth of Epitaxial Graphene on Pt(111)

Otero, Gonzalo; González, César; Pinardi, A. L.; Merino, Pablo; Gardonio, Sara; Lizzit, Silvano; Blanco-Rey, M.; Ruit, van de K Kevin; Flipse, Cfj Kees; Méndez, Javier; Andrés, de Pl; Martín‐Gago, J. A.

doi:10.1103/physrevlett.105.216102

Cited by 74 publications

(99 citation statements)

References 25 publications

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“…Note that the size of domains of graphene on Pt(111) with different orientations strongly depends on parameters of synthesis. In addition to the 30 • domain, varying the temperature of sample and exposure of propylene we observed the formation of the domains with the structures rotated on 0 • and 19 • relative to Pt(111), in agreement with previous works [16,31,32].…”

Section: Experimental and Computational Detailssupporting

confidence: 79%

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Nontrivial spin structure of graphene on Pt(111) at the Fermi level due to spin-dependent hybridization

et al. 2014

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The electronic and spin structure of a graphene monolayer synthesized on Pt(111) has been investigated experimentally by angle-and spin-resolved photoemission with different polarizations of incident synchrotron radiation and using density functional theory calculations. It is shown that despite the observed total quasifreestanding character of the dispersion of the graphene π state remarkable local distortions and breaks in the dispersions take place due to hybridization between the graphene π and Pt d states. Corresponding spin-dependent avoided-crossing effects lead to significant modification of the spin structure and cause an enhanced induced spin-orbit splitting of the graphene π states near the Fermi level in the region of theK point of the graphene Brillouin zone (BZ) with a magnitude of 80-200 meV depending on the direction in the BZ. Using p, s, and elliptical polarizations of the synchrotron radiation, the contributions of the graphene π and Pt d states were separated and their intersection at the Fermi level, which is important for effective spin injection between these states, was shown. Moreover, analysis of the data allows us to conclude that in the region of the Dirac point the spin structure of the system cannot be described by a Rashba splitting, and even a spin-orbit gap between lower and upper Dirac cones is observed.

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Section: Experimental and Computational Detailssupporting

confidence: 79%

“…In previous studies [16,31,32], graphene synthesized on Pt(111) was considered as quasifreestanding graphene. The branch of the π state of graphene reaches the Fermi level and crosses it near theK point of the BZ (see Figs.…”

Section: Discussionmentioning

confidence: 99%

Nontrivial spin structure of graphene on Pt(111) at the Fermi level due to spin-dependent hybridization

et al. 2014

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“…As demonstrated by in-situ low-energy electron microscopy, 30 no nucleation and growth of additional graphene sheets beyond the monolayer is possible on Pt(111). [30][31][32][33][34][35][36][37][38] The attained LEED pattern (shown in Figure 1) is essentially similar to that one reported in Ref. 32.…”

Section: Methodssupporting

confidence: 72%

Water adsorption on graphene/Pt(111) at room temperature: A vibrational investigation

et al. 2011

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Water interaction with quasi-freestanding graphene deposited on Pt(111) has been investigated by using vibrational spectroscopy. Loss measurements show that water molecules dosed at room temperature can dissociate giving rise to C-H bonds. The formation of the C-H bonds strongly attenuates the optical phonons of the graphene sheet. On the other hand, at 100 K water has been found to adsorb only in molecular state. Present findings should be taken into account in engineering graphene-based devices which should work at atmospheric pressure and at room temperature

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“…In the nineties the research on graphitic surfaces shifted the attention to the STM observation of superstructures [9][10][11], and thereafter to the interaction between such superstructures and grain boundaries in graphite [12]. These fields has been recently reactivated by the possibility of getting single and multi graphene layer islands onto different substrates such as: Palladium [13], Iridium [14], Ruthenium [15], Copper [16], or Platinum [17].…”

Section: Introductionmentioning

confidence: 99%

Moiré patterns on STM images of graphite induced by rotations of surface and subsurface layers

et al. 2013

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We have observed with STM moiré patterns corresponding to the rotation of one graphene layer on HOPG surface. The moiré patterns were characterized by rotation angle and extension in the plane. Additionally, by identifying border domains and defects we can discriminate between moiré patterns due to rotation on the surface or subsurface layer. For a better understanding of moiré patterns formation we have studied by first principles an array of three graphene layers where the top or the middle layer appears rotated around the stacking axis. We compare the experimental and theoretical results and we show the strong influence of rotations both in surface and subsurface layers for moiré patterns formation in corresponding STM images.

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Ordered Vacancy Network Induced by the Growth of Epitaxial Graphene on Pt(111)

Cited by 74 publications

References 25 publications

Nontrivial spin structure of graphene on Pt(111) at the Fermi level due to spin-dependent hybridization

Nontrivial spin structure of graphene on Pt(111) at the Fermi level due to spin-dependent hybridization

Water adsorption on graphene/Pt(111) at room temperature: A vibrational investigation

Moiré patterns on STM images of graphite induced by rotations of surface and subsurface layers

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