Ordering and Phase Transitions in Adsorbed Monolayers of Diatomic Molecules

Marx, Dominik; Wiechert, H.

doi:10.1002/9780470141540.ch4

Cited by 44 publications

(28 citation statements)

References 352 publications

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“…Dipoles with the permanent dipole moment are a good model for a lot of kinds of adsorbed molecules [109][110][111][112]. In order to describe the electrostatic interaction between them, it is reasonable to start from the consideration of two pairs of opposite charges, i.e., from two extended dipoles.…”

Section: Electrostatic Interaction Of Dipoles Near the Interfacementioning

confidence: 99%

Electrostatic charge-charge and dipole-dipole interactions near the surface of a medium with screening non-locality (Review Article)

Gabovich

Войтенко

2016

Low Temperature Physics

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Interaction energy between two point charges, W QQ′ , or two point dipoles, W PP′ , located in a medium with a constant dielectric permittivity near the plane surface of a metallic or semiconducting substrate with the spatial dispersion of its dielectric function has been revisited. The calculations were made on the basis of the Green's function method for layered systems. Long-range lateral asymptotics were found. The non-local character of screening in the substrates was shown to substantially modify the dependences of W QQ′ and W PP′ on the distance between the objects concerned. Thus, the purported conventional electrostatic interactions between adsorbed atoms and molecules (modeled by point charges and point dipoles) should be reconsidered making allowance for the substrate polarization. In particular, this factor may significantly influence the structure of electrostatic dipole lattices arising near the surfaces of solids, as well as the kinetics of charge or dipole motion over the surface.

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Section: Electrostatic Interaction Of Dipoles Near the Interfacementioning

confidence: 99%

Electrostatic charge-charge and dipole-dipole interactions near the surface of a medium with screening non-locality (Review Article)

Gabovich

Войтенко

2016

Low Temperature Physics

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“…1D chain models are applied to the description of linear lattice dynamics and thermodynamics of molecular cryocrystals [5,6], with generalization into 3D systems [5,7,8], to nonlinear dynamics [9] and to thermoconductivity [10]. Real objects, to which 1D and 2D models can be applied, are adsorbed structures [11,12] or crystals with lowdimensional motives [13]. Some approximations are necessary to simplify the system's description because of complexity even for a 1D molecular chain.…”

Section: Introductionmentioning

confidence: 99%

“…For linear models such approximations use a force matrix (harmonic expansion near the equilibrium position) instead of parameters of interaction, or use a given parallel ordering of molecules [5] (p. 428), [6][7][8]. In nonlinear consideration such approximations are a model potential and 1D rotation [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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Orientational vibrations of 2D molecular layers with quadrupolar interaction

Lykah

Syrkin

2007

Physica Status Solidi (b)

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Molecular layers with rotational degrees of freedom and quadrupolar interaction between linear molecules are investigated theoretically. Rotation of the molecules in the plane of an adsorbing surface is considered; centers of gravity of the molecules are pinned to sites of a rectangular lattice. The energy of the system contains an additional parameter ρ (ratio of the lattice constants of a 2D system), in comparison with the 1D case. It is found that alternating orientation of the adsorbed molecules along both sides of the rectangular unit cell corresponds to the minimum of the energy. Equations of rotational movement are derived for linear oscillations of molecules near the equilibrium positions in a 2D lattice. Dispersion relations are obtained and analyzed. The Brillouin zone cannot be divided as in the 1D case after unit-cell doubling. The parameter ( ) B k , which describes the topology of the dispersion surfaces, is introduced. It is shown that both branches of the spectrum have optical behavior. The gaps and bandwidths are found as functions of ρ . The method of calculation of the density of states (DOS) for translational oscillations of a 2D rectangular lattice with one atom per unit cell is generalized for rotational oscillations of a 2D twosublattice molecular lattice. The diagram describing three regions with different analytical properties of the DOS which correspond to different topologies of the isofrequency lines is introduced. This diagram is a portrait in the plane of the parameters B and ρ . The DOS is found in terms of complete elliptic integrals of the first kind.

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“…Physical adsorption of nonspherical molecules on well defined crystal surfaces has been a field of vivid activity for several years [1][2][3][4][5][6][7][8][9][10][11]. These studies indicated that periodic modulation of an adsorbing potential may cause strong orientational effects in adsorbed films formed by linear molecules on the surfaces of square and rectangular lattice symmetry [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of chain molecules in pores with crystalline walls: a density functional approach

Bucior¹,

Patrykiejew²,

Sokołowski³

et al. 2009

Condens. Matter Phys.

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A microscopic density functional theory of adsorption of chain molecules on the attractive solid surfaces of crystalline symmetry is developed. The proposed approach is based on the expansions of one-particle functions into two-dimensional Fourier series. Illustrative calculations for dimers, 8-and 16-mers adsorbed on a (100) fcc crystal surface indicate the effect of the periodicity of the adsorbing potential on the structure of the adsorbed layer and thermodynamics of adsorption.

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Ordering and Phase Transitions in Adsorbed Monolayers of Diatomic Molecules

Cited by 44 publications

References 352 publications

Electrostatic charge-charge and dipole-dipole interactions near the surface of a medium with screening non-locality (Review Article)

Electrostatic charge-charge and dipole-dipole interactions near the surface of a medium with screening non-locality (Review Article)

Orientational vibrations of 2D molecular layers with quadrupolar interaction

Adsorption of chain molecules in pores with crystalline walls: a density functional approach

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