The healing mechanism for excited molecules near metallic surfaces

Barbiellini, B.; Platzman, P. M.

doi:10.1088/1367-2630/8/2/020

Cited by 11 publications

(11 citation statements)

References 27 publications

(34 reference statements)

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“…An explanation could be that the ring of the porphyrin molecule, in proximity to the metallic substrate, strongly stabilizes the entire molecule, making it less sensitive to radiation damage. 19 However, we could not detect any edge jump in the energy range of the Cl-L 2,3 edges. Density functional theory ͑DFT͒ calculations 18 showed that the ferromagnetic coupling for the molecules to the substrate occurs only when the Cl atom is detached.…”

Section: Methodsmentioning

confidence: 56%

Fe-porphyrin monolayers on ferromagnetic substrates: Electronic structure and magnetic coupling strength

Bernien

Miguel

et al. 2007

Phys. Rev. B

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In this work, the different coupling strengths of Fe-octaethylporphyrin molecules sublimated in situ onto epitaxially grown Co and Ni films on Cu͑100͒ are studied by systematic x-ray-absorption and x-ray magnetic circular dichroism ͑XMCD͒ measurements. The fine structures observed in the absorption and dichroic spectra of the Fe-L 2,3 edges are explained in terms of different Fe 3d orbitals probed in angular-dependent measurements. The coverage of Fe-porphyrin molecules is varied from submonolayer to 1.5 ML ͑monolayer͒, and measurements were carried out at room as well as at low temperatures. From the temperature dependence of the Fe-XMCD signal, a weaker coupling strength between the Fe atom and the Ni substrate is found as compared to the Co case.

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Section: Methodsmentioning

confidence: 56%

Fe-porphyrin monolayers on ferromagnetic substrates: Electronic structure and magnetic coupling strength

Bernien

Miguel

et al. 2007

Phys. Rev. B

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“…The HE-XRD setup at this beamline is described in more detail elsewhere [39]. Although radiation damage to individual nanoparticles should be reduced as much as possible, nanoparticles on a metallic substrate can be healed through a healing mechanism that involves a neutralization process [40].…”

Section: Methodsmentioning

confidence: 99%

Structure of Manganese Oxide Nanoparticles Extracted via Pair Distribution Functions

et al. 2020

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The structure of nanoparticles has been difficult to determine accurately because the traditional structure methods rely on large monocrystals. Here, we discuss the structure of nanoparticles based on real-space modeling of the pair distribution function obtained by a Fourier transformation of the high-energy X-ray scattering structure factor. In particular, we consider X-ray scattering data taken from colloidal manganese oxide nanoparticles used in Lithium-ion batteries, air-purification, and biomedical systems, which are known to exist in various nanometer-sized polymorphs. Insight is thus obtained into characterizing the structural relaxation of the MnO6 octahedra, which are the key building blocks of oxide nanoparticles, important in many technologies.

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“…As illustrated in Figure 4, the positron transitions from a scattering state to a metal surface state and the excess of energy is transferred to a valence electron emitted in the vacuum. Such non-radiative decay phenomenon is of great scientific interest in different areas of physics and chemistry [36][37][38]. For instance, new designs for solar energy conversion use non-radiative mechanisms for the energy transfer from excitons created on a photon absorption layer to high mobility charge carriers inside the solar cell.…”

Section: Hybrid Plasmonic-sqd Platformmentioning

confidence: 99%

Electromagnetic Field in Hybrid Quantum Plasmonic-Photonic Systems

et al. 2018

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We study excitations and quantum optical properties of hybrid networks made up of metal nanoparticles, semiconductor quantum dots and molecules. Such processes can be used for the localization and the guiding of the electromagnetic field. Localized modes occurring in these networks and the generation of confined fields are also connected to the enhancement of Raman-scattering occurring in these systems. We review some recent theoretical and computational studies of optical properties in hybrid nano-systems to gain control of light-matter interactions at the quantum level for efficient energy transport and sensing applications.

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The healing mechanism for excited molecules near metallic surfaces

Cited by 11 publications

References 27 publications

Fe-porphyrin monolayers on ferromagnetic substrates: Electronic structure and magnetic coupling strength

Fe-porphyrin monolayers on ferromagnetic substrates: Electronic structure and magnetic coupling strength

Structure of Manganese Oxide Nanoparticles Extracted via Pair Distribution Functions

Electromagnetic Field in Hybrid Quantum Plasmonic-Photonic Systems

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