Graphene-protected iron layer on Ni(111)

Dedkov, Yuriy; Fonin, Mikhail; Rüdiger, Ulrich; Laubschat, C.

doi:10.1063/1.2953972

Cited by 153 publications

(159 citation statements)

References 15 publications

(25 reference statements)

Supporting

Mentioning

141

Contrasting

Unclassified

Order By: Relevance

“…2(a): a much larger separation between π and π * at the K point is observed. We attribute this to the intercalation of potassium atoms into the graphene/Au interface, consistent with the behavior of other metals (Au, Ag, Fe, Cu...) that readily intercalate in between the interface of graphene and the Ni substrate 7,19,27,28 . The intercalation at RT is also consistent with the reported 100 K temperature limit above which potassium ions on a graphene sheet become mobile 29 .…”

Section: Resultsmentioning

confidence: 56%

Direct observation of a dispersionless impurity band in hydrogenated graphene

et al. 2011

View full text Add to dashboard Cite

We show with angle-resolved photoemission spectroscopy that a new energy band appears in the electronic structure of electron doped hydrogenated monolayer graphene (H-graphene). Its occupation can be controlled with the hydrogen amount and allows for tuning of graphene's doping level. Our calculations of the electronic structure of H-graphene suggest that this state is largely composed from hydrogen 1s orbitals and remains extended for low H coverages despite the random chemisorption of H. Further evidence for the existence of a hydrogen state is provided by X-ray absorption studies of undoped H-graphene which are clearly showing the emergence of an additional state in the vicinity of the π * -resonance.

show abstract

Section: Resultsmentioning

confidence: 56%

Direct observation of a dispersionless impurity band in hydrogenated graphene

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Above that, a single atom thick graphene layer can effectively protect the underlying material against oxidation and/or corrosion [11,12]. This property is particularly exciting when graphene is deposited or formed on the surface of a ferromagnet or a material which exhibits strong spin-orbit interaction [13][14][15][16][17][18][19]. Here, interfacial contact between graphene and the respective material might lead to the appearance of different new phenomena in graphene and at the interface, such as induced magnetism in graphene [20][21][22], possible induced spin-orbit splitting of the graphene π states [23,24], conservation of spin-polarized electron emission from the underlying ferromagnetic material [13,15], etc.…”

mentioning

confidence: 99%

Local electronic properties of the graphene-protected giant Rashba-split BiAg2 surface

et al. 2017

View full text Add to dashboard Cite

We report the preparation of an interface between graphene and a strong Rashba-split BiAg 2 surface alloy and an investigation of its structure as well as the electronic properties by means of scanning tunneling microscopy/spectroscopy and density functional theory calculations. Upon evaluation of the quasiparticle interference patterns, an unperturbed linear dispersion for the π band of n-doped graphene is observed. Our results also reveal the intact nature of the giant Rashba-split surface states of the BiAg 2 alloy, which demonstrate only a moderate downward energy shift due to the presence of graphene. This effect is explained in the framework of density functional theory by an inward relaxation of the Bi atoms at the interface and subsequent delocalization of the wave function of the surface states. Our findings demonstrate a realistic pathway to prepare a graphene-protected giant Rashba-split BiAg 2 for possible spintronic applications. DOI: 10.1103/PhysRevB.95.155428 Graphene has attracted much attention due to its unique transport, electronic, and elastic properties [1][2][3]. Taking into account these characteristics, many practical applications of graphene have been proposed. The most promising are graphene-based touch screens, which will potentially replace indium-tin-oxide (ITO-) based screens in the future [4,5], batteries and supercapacitors [6][7][8], and composite materials [9,10]. Above that, a single atom thick graphene layer can effectively protect the underlying material against oxidation and/or corrosion [11,12]. This property is particularly exciting when graphene is deposited or formed on the surface of a ferromagnet or a material which exhibits strong spin-orbit interaction [13][14][15][16][17][18][19]. Here, interfacial contact between graphene and the respective material might lead to the appearance of different new phenomena in graphene and at the interface, such as induced magnetism in graphene [20][21][22], possible induced spin-orbit splitting of the graphene π states [23,24], conservation of spin-polarized electron emission from the underlying ferromagnetic material [13,15], etc.Previously published works on the adsorption of graphene on the surfaces of heavy materials, such as Ir (111) and Au(111), demonstrate that such contacts only weakly modify the dispersion of the spin-orbit split surface states of the metal surface. Adsorption of graphene merely leads to a rigid shift of the respective surface states to smaller binding energies [16,25,26], which was explained by the stronger localization of the surface state wave function, leading to a corresponding energy shift. At the same time, the intercalation of Au in the graphene/Ni(111) interface leads to the appearance of induced spin-orbit splitting of the graphene π states (up to ≈100 meV) as a result of the hybridization of these states and valence band states of the underlying heavy metal [23,24]. Here, the energetically unfavorable model of diluted Au atoms underneath graphene on Ni (111) Here, we report the fabrication of ...

show abstract

“…Being an ultra-thin, strong and light material, graphene 7 has been viewed as an ideal nanocoating material. Various metal surfaces including Ni, 8,9 Ru(0001), 10 Cu/Ni alloy, 11 Cu, 12,13 Ir(111), and Pt(111) 14 have been coated by graphene and a reduction in the oxidation of the surface was reported. It was theoretically shown that even graphene itself strongly interacts with oxygen atoms, it poses a high energy barrier for the penetration of oxygen and thus can protect the surface underneath against oxidation as long as the graphene coating is defect free.…”

Section: Introductionmentioning

confidence: 99%

Monolayers of MoS2 as an oxidation protective nanocoating material

Sen

Şahin

Peeters

et al. 2014

Journal of Applied Physics

View full text Add to dashboard Cite

First-principle calculations are employed to investigate the interaction of oxygen with ideal and defective MoS2 monolayers. Our calculations show that while oxygen atoms are strongly bound on top of sulfur atoms, the oxygen molecule only weakly interacts with the surface. The penetration of oxygen atoms and molecules through a defect-free MoS2 monolayer is prevented by a very high diffusion barrier indicating that MoS2 can serve as a protective layer for oxidation. The analysis is extended to WS 2 and similar coating characteristics are obtained. Our calculations indicate that ideal and continuous MoS2 and WS2 monolayers can improve the oxidation and corrosion-resistance of the covered surface and can be considered as an efficient nanocoating material. © 2014 Author(s)

show abstract

Graphene-protected iron layer on Ni(111)

Cited by 153 publications

References 15 publications

Direct observation of a dispersionless impurity band in hydrogenated graphene

Direct observation of a dispersionless impurity band in hydrogenated graphene

Local electronic properties of the graphene-protected giant Rashba-split BiAg2 surface

Monolayers of MoS2 as an oxidation protective nanocoating material

Contact Info

Product

Resources

About