Thermal Stability of Corrugated Epitaxial Graphene Grown on Re(0001)

Miniussi, Elisa; Pozzo, Monica; Baraldi, Alessandro; Vesselli, Erik; Zhan, RR; Comelli, Giovanni; Menteş, Tevfik Onur; Niño, M.A.; Locatelli, Andrea; Lizzit, Silvano; Alfè, Dario

doi:10.1103/physrevlett.106.216101

Cited by 110 publications

(121 citation statements)

References 32 publications

Supporting

Mentioning

111

Contrasting

Order By: Relevance

“…The intercalated noble metal atoms damp the G/Re moiré pattern as evidenced by low-energy electron diffraction measurements shown in Figure 1(h) and also affect the core states of both graphene and Re. Previous photoemission studies of graphene on Re 21 already reported that the C 1s peak (black full curve in Figure 2(a)) exhibits two main contributions centered at binding energies 285.05 and 284.45 eV. This splitting is a consequence of the strong buckling of the graphene film (about 1.6Å according to DFT calculations 21 ), as the large corrugation defines differently interacting regions of the moiré depending on the carbon positions relative to the substrate atoms.…”

Section: Methodsmentioning

confidence: 99%

“…Previous photoemission studies of graphene on Re 21 already reported that the C 1s peak (black full curve in Figure 2(a)) exhibits two main contributions centered at binding energies 285.05 and 284.45 eV. This splitting is a consequence of the strong buckling of the graphene film (about 1.6Å according to DFT calculations 21 ), as the large corrugation defines differently interacting regions of the moiré depending on the carbon positions relative to the substrate atoms. This leads to distinct C 1s components in the photoemission spectra, with the strongest interacting areas displaying contributions on the higher binding energy side of the spectra.…”

Section: Methodsmentioning

confidence: 99%

“…For a detailed analysis, we investigated the electronic structure of graphene supported on Re(0001) before and after the intercalation of one monolayer (ML) Ag film with ARPES experiments and density functional theory (DFT) calculations to assess the decoupling of the graphene sheet. Due to the lattice mismatch, graphene on Re(0001) forms an incommensurate phase that exhibits a moiré pattern consistent with a (10×10)-graphene unit cell over a (9×9)-Re(0001) unit cell 21 . Similar to Ru(0001) and Rh(111) 22 , we find a strong graphene-substrate interaction on the bare Re(0001) surface, as indicated by a splitting of the C 1s photoemission peak of graphene and the electronic structure measured from ARPES experiments.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hybridization of graphene and a Ag monolayer supported on Re(0001)

et al. 2013

View full text Add to dashboard Cite

We have investigated the electronic structure of graphene supported on Re(0001) before and after the intercalation of one monolayer of Ag by means of angle-resolved photoemission spectroscopy measurements and density functional theory calculations. The intercalation of Ag reduces the graphene-Re interaction and modifies the electronic band structure of graphene. Although the linear dispersion of the π state of graphene in proximity of the Fermi level highlights a rather weak graphene-noble metal layer interaction, we still observe a significant hybridization between the Ag bands and the π state in lower energy regions. These results demonstrate that covering a surface with a noble metal layer does decouple the electronic states, but still leads to a noticeable change in the electronic structure of graphene.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hybridization of graphene and a Ag monolayer supported on Re(0001)

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Graphene ripples less than 1 nm high, for example, have been shown to cause spatial charge redistribution [3,4] and electron scattering [5], to enhance graphene's chemical reactivity [6,7], and affect its thermal stability [8,9]. Aiming for high-quality graphene electronics, the search for suitable substrates has increasingly focused on layered materials, like mica [10], hexagonal boron nitride (h-BN) [11], or MoS 2 [12].…”

Section: Introductionmentioning

confidence: 99%

Harmonic model of corrugations of incommensurate two-dimensional layers

Thürmer

Spataru

2017

Phys. Rev. B

View full text Add to dashboard Cite

Abstract:We developed a method to predict the height corrugations of moiré structures resulting from varying azimuthal orientations of graphene on hexagonal boron nitride substrates. Our model accounts for the flexural rigidity of graphene and assumes a sinusoidal corrugation of the preferred height of C atoms above the substrate. Using 4 parameters derived from density functional theory (DFT) the model computes corrugations of incommensurate moiré structures currently inaccessible to DFT with an estimated accuracy on the order of 0.01 Å. We predict that azimuthally aligned graphene domains are energetically favored over rotated ones.

show abstract

“…The van der Waals interaction sticks the graphene sheet to both the superconducting substrate and islands causing a non-uniform strain. Also, recent advances in fabrication of graphene membrane have made a situation that the wavelength, the amplitude and the orientation of out-of-plane deformation of a graphene membrane can be controllably produced [53][54][55][56][57].…”

mentioning

confidence: 99%

Inhomogeneous superconductivity in the presence of time-reversal symmetry

Hosseini¹

2015

EPL

View full text Add to dashboard Cite

PACS 74.20.-z -Theories and models of superconducting state PACS 74.81.-g -Inhomogeneous superconductors and superconducting systems, including electronic inhomogeneities PACS 73.22.Pr -Electronic structure of graphene Abstract -We propose a new type of non-uniform condensate state in the presence of timereversal symmetry. The underlying platform of this state is a corrugated honeycomb lattice which exhibits an inhomogeneous pseudo magnetic field. Using self-consistent tight binding Bogoliubovde Gennes formalism, we show that an s-wave pairing of chiral carriers in the presence of an inhomogeneous pseudo magnetic field results in a spatially modulated order parameter with the half wavelength of the corrugation. The manner of modulation depends on the fundamental directions of honeycomb lattice, the zigzag and armchair directions. The stability of this inhomogeneous superconductivity is also analyzed and possible experimental realization is discussed.Introduction.-Inhomogeneous superconductivity (IS) with a spatially modulated order parameter has attracted a great deal of attention from both the theoretical [1] and experimental [2-5] points of view. The IS can emerge through a non-trivial pairing between electronic states. The first type of IS was considered by Fulde and Ferrell [6], and Larkin and Ovchinnikov [7] (FFLO). In the FFLO state, the Cooper pairs can be formed through coupling between the imbalanced opposite spin states near the Fermi surface with non zero center-of-mass momentum, resulting in an oscillatory behavior of pairing potential in the real space. The other types of IS are gapped [8][9][10][11] and gapless [12,13] topological FFLO states which are protected against disorders. In contrast to the above mentioned ISs which are made by the magnetic ingredient, the possibility of IS in the absence of magnetic field is indeed an intriguing issue. So the interesting question arises, how is it possible to obtain IS in the presence of time-reversal symmetry?

show abstract

Thermal Stability of Corrugated Epitaxial Graphene Grown on Re(0001)

Cited by 110 publications

References 32 publications

Hybridization of graphene and a Ag monolayer supported on Re(0001)

Hybridization of graphene and a Ag monolayer supported on Re(0001)

Harmonic model of corrugations of incommensurate two-dimensional layers

Inhomogeneous superconductivity in the presence of time-reversal symmetry

Contact Info

Product

Resources

About