Growth and structure of thin MnO films on Ag(001) in dependence on film thickness

Chassé, A.; Langheinrich, Ch.; Müller, Frank; Hüfner, S.

doi:10.1016/j.susc.2007.11.014

Cited by 21 publications

(11 citation statements)

References 41 publications

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“…18,19 Fundamental studies of MnO thin films have been performed on a number of supports, including Rh(100), 20 Rh(111), 21 Pt(111) [22][23][24][25] and Pd(100). 26,27 MnO on Ag(100) has been fairly well characterized utilizing a number of surface techniques, including low energy electron diffraction (LEED), [28][29][30][31][32][33] X-ray photoelectron diffraction (XPD), 30,31 near edge X-ray absorption fine structure (NEXAFS) 32 and X-ray photoelectron spectroscopy (XPS). 29,32,34 MnO films on Ag(100) are tetragonally distorted due to the lattice mismatch of about 9%.…”

Section: Introductionmentioning

confidence: 99%

Water dissociation on MnO(1 × 1)/Ag(100)

Arble

Tong

Giordano

et al. 2016

Phys. Chem. Chem. Phys.

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In this work we utilize experimental and simulation techniques to examine the molecular level interaction of water with a MnO(1 × 1) thin film deposited onto Ag(100). The formation of MnO(1 × 1)/Ag(100) was characterized by low energy electron diffraction and scanning tunneling microscopy. Density functional theory (DFT) shows MnO(1 × 1) is thermodynamically more stable than MnO(2 × 1) by ∼0.4 eV per MnO. Upon exposure to 2.5 Torr water vapor at room temperature, X-ray photoemission spectroscopy results show extensive surface hydroxylation attributed to reactivity at MnO(1 × 1) terrace sites. DFT calculations of a water monomer on MnO(1 × 1)/Ag(100) show the dissociated form is energetically more favorable than molecular adsorption, with a hydroxylation activation barrier 0.4 eV per HO. These results are discussed and contrasted with previous studies of MgO/Ag(100) which show a stark difference in behavior for water dissociation.

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Section: Introductionmentioning

confidence: 99%

Water dissociation on MnO(1 × 1)/Ag(100)

Arble

Tong

Giordano

et al. 2016

Phys. Chem. Chem. Phys.

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“…Several groups reported successful growth on top of single-crystal metals as Ag͑100͒, Rh͑100͒, Pd͑100͒, and Pt͑111͒. [27][28][29][30][31][32][33][34][35][36][37][38] Mainly growth of MnO͑100͒oriented films had been found. On the other hand for the growth on Pd͑100͒ a variety of different manganese oxide monolayer ͑ML͒ structures have been characterized and there phonon spectra reported.…”

Section: Introductionmentioning

confidence: 99%

Thickness dependent vibrational and electronic properties of MnO(100) thin films grown on Pt(111)

et al. 2010

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MnO films have been grown by reactive metal deposition in an O 2 atmosphere on Pt͑111͒. The vibrational and electronic excitations between 50 meV and 7 eV have been investigated by high-resolution electron energy loss spectroscopy as function of layer thickness up to 17 ML. The vibrational spectrum of the MnO monolayer is characterized by a strong and narrow phonon at 368 cm −1 . For coverages above the monolayer the oxide film is characterized by a Wallis mode and a Fuchs-Kliewer phonon ͑382 and 547 cm −1 ͒. Whereas the Wallis mode has constant intensity and frequency, the Fuchs-Kliewer phonon intensity increases and its frequency decreases with coverage as predicted by dielectric theory. Mild annealing ͑Ͻ850 K͒ of MnO films improves the long-range ordering while higher temperatures causes dewetting and cluster formation. For thin films between 4 and 10 monolayers the losses due to electronic transitions within the Mn 3d states have been studied. Six transitions could be identified which indicate for thick films an electronic structure similar to the one found for MnO͑100͒ single crystal surface. Additionally, surface related d-d transitions have been identified.

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“…Thus on the basis of the formation energy f E calculations of the ferromagnetic MG/MnO(001) heterointerface the successful synthesis possibility of new materials of this type has been shown. The recent experiments [17,22] have demonstrated possibilities to obtain epitaxial ultrathin layers of manganese monoxide as well as graphene sheets on surface with different crystal geometries. Therefore the obtained data on the transport properties as well as the magnetism nature in the ferromagnetic graphene/MnO(001) heterointerface can be considered as the possible base for implementations in devices of spintronics.…”

Section: Discussionmentioning

confidence: 99%

“…JMP In the present work properties of the MG/MnO(001) interface at room temperature are studied. At that we proceeded from the following reasons: firstly ultrathin MnO(001) layers of high structural quality have been obtained in several laboratories of the world [16,22,31]; secondly MnO(001) layers are thermodynamically stable at room temperature; thirdly we based on results of the work [47] in which it is ascertained that growing domains of graphene can cover various disproportional surfaces. It also results from the analysis of images of graphene structures presented at Figure 1(a).…”

Section: Computational Aspectsmentioning

confidence: 99%

“…By the methods of low energy electron diffraction (LEED) and X-ray photoelectron diffraction (XPD) features of growth of the ultrathin MnO layers obtained with the impulse laser deposition [17] have been studied. It has shown [22] that an atom structure of the ultrathin 2D MnO layers essentially depends on thickness of grown layer. On the basis of both X-ray methods of absorption spectroscopy (XAS) and photoelectronic one (XPS) it has shown that electron and crystalline properties of the 2D MnO/Ag(001) ultrathin film and 3D MnO crystal are different [23].…”

Section: Introductionmentioning

confidence: 99%

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Materials for Spintronics: Magnetic and Transport Properties of Ultrathin (Monolayer Graphene)/MnO(001) and MnO(001) Films

Ilyasov¹,

Meshi²,

Ryzhkin³

et al. 2011

JMP

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Results of investigations of band structure, Fermi surface and effective masses of charge carriers in the ultrathin (monolayer graphene)/MnO(001) and MnO(001) films are presented using the method of the density functional theory. Features of spin states of valence band and Fermi level as well as an interatomic interaction in these systems are discussed. A magnetic moment at Mn atom is estimated and an effect of spin polarization at atoms of oxygen and carbon has been revealed which natures are discussed. By calculations of structural energies for 2D (monolayer graphene)/MnO(001) and 2D MnO(001) a stability of these systems has been ascertained. In the 2D (monolayer graphene)/MnO(001) and 2D MnO(001) systems the band structure calculations for the 2D systems mentioned above point out that tensor components of effective masses of both electrons and holes are in the ranges of (0.15 - 0.54) m0 and (0.38 - 1.27) m0 respectively. Mobility estimations of two-dimensional charge carriers for a 2D (monolayer graphene)/MnO(001)AF2 heterostructure have been performed

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Growth and structure of thin MnO films on Ag(001) in dependence on film thickness

Cited by 21 publications

References 41 publications

Water dissociation on MnO(1 × 1)/Ag(100)

Water dissociation on MnO(1 × 1)/Ag(100)

Thickness dependent vibrational and electronic properties of MnO(100) thin films grown on Pt(111)

Materials for Spintronics: Magnetic and Transport Properties of Ultrathin (Monolayer Graphene)/MnO(001) and MnO(001) Films

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