Hybridization-induced charge rebalancing at the weakly interactive C60/Fe3O4(001) spinterface

Wong, Ping Kwan Johnny; Zhang, Wen; Laan, G. van der; Jong, M. P. de

doi:10.1016/j.orgel.2015.11.031

Cited by 19 publications

(8 citation statements)

References 34 publications

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“…Molecules that are farther away from the ferromagnetic surface-such as second-layer molecules-show a reduced hybridization strength, which can range from weak chemisorption to the physisorption regime, depending mostly on the geometric configuration of the specific interface. The same considerations also hold for molecules in direct contact with less reactive magnetic surfaces, such as oxygen-passivized surfaces and magnetic oxides [51][52][53] . We can thus Exemplification of the interactions at a molecular interface consisting of a transition metal (TM) surface and two layers of organic molecules.…”

Section: The Molecular Sidementioning

confidence: 91%

Activating the molecular spinterface

2017

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The miniaturization trend in the semiconductor industry has led to the understanding that interfacial properties are crucial for device behaviour. Spintronics has not been alien to this trend, and phenomena such as preferential spin tunnelling, the spin-to-charge conversion due to the Rashba-Edelstein effect and the spin-momentum locking at the surface of topological insulators have arisen mainly from emergent interfacial properties, rather than the bulk of the constituent materials. In this Perspective we explore inorganic/molecular interfaces by looking closely at both sides of the interface. We describe recent developments and discuss the interface as an ideal platform for creating new spin effects. Finally, we outline possible technologies that can be generated thanks to the unique active tunability of molecular spinterfaces.

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Section: The Molecular Sidementioning

confidence: 91%

Activating the molecular spinterface

2017

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“…Moreover, a weak coupling between molecules and metallic substrates is required in those applications involving the separation of photoexcited charge, because the molecule/electrode interaction can reduce the exciton lifetime. , Various strategies have been reported to obtain C 60 layers weakly bound to the support. C 60 molecules may be deposited on an oxide surface, as in the case of C 60 films interfaced with WO 2 , , TiO 2 , or Fe 3 O 4 . More sophisticated architectures, involving the coupling of C 60 molecules with different organic layers, have been successfully implemented to decrease the overlap between the fullerene resonances and the electronic states of the metallic substrates. , Recently, an efficient decoupling of C 60 from the support has been obtained by inserting a graphene layer in between the molecular film and a metallic or semiconducting substrate.…”

Section: Introductionmentioning

confidence: 99%

Controlling the Electronic and Structural Coupling of C₆₀ Nano Films on Fe(001) through Oxygen Adsorption at the Interface

Picone

Giannotti

Riva

et al. 2016

ACS Appl. Mater. Interfaces

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C molecules coupled to metals form hybrid systems exploited in a broad range of emerging fields, such as nanoelectronics, spintronics, and photovoltaic solar cells. The electronic coupling at the C/metal interface plays a crucial role in determining the charge and spin transport in C-based devices; therefore, a detailed understanding of the interface electronic structure is a prerequisite to engineering the device functionalities. Here, we compare the electronic and structural properties of C monolayers interfaced with Fe(001) and oxygen-passivated Fe(001)-p(1 × 1)O substrates. By combining scanning tunneling microscopy and spectroscopy, Auger electron spectroscopy, photoemission and inverse photoemission spectroscopies, we are able to elucidate the striking effect of oxygen on the interaction between Fe(001) and C. Upon C deposition on the oxygen-passivated surface, the oxygen layer remains buried at the C/Fe(001)-p(1 × 1)O interface, efficiently decoupling the fullerene film from the metallic substrate. Tunneling and photoemission spectroscopies reveal the presence of well-defined molecular resonances for the C/Fe(001)-p(1 × 1)O system, with a large HOMO-LUMO gap of about 3.4 eV. On the other hand, for the C/Fe(001) interface, a strong hybridization between the substrate states and the C orbitals occurs, resulting in broader molecular resonances.

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“…Adsorption phenomena also have an interplay with spin-dependent phenomena. Cases of magnetic substrates where molecules can attain magnetic properties as a consequence of hybridization are reported (see, e.g., C 60 /Fe 3 O 4 [158] or pentacene on Co islands on copper [159]) or, conversely, ones of adsorbed magnetic molecules (e.g., porphyrines incorporating magnetic centers). The combination of a magnetic molecule with magnetic substrates [160] also raises significant interest for molecular spintronic devices.…”

Section: Induced Spin Distributionsmentioning

confidence: 99%

Energetic Ground State Calculations, Electronic Band Structure at Surfaces

Brivio

Fratesi

2020

Springer Handbooks

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Energetic ground state calculation and Electronic band structure at surfaces are an important field of research in surface science, since crystallographic surfaces have been grown under ultra high vacuum conditions and several surface sensitive techniques have been developed. Currently clean, almost 2D periodic surfaces can be obtained even after adsorbing complex organic molecules.Adsorption is a very relevant phenomenon and well known are its implications to corrosion, heterogeneous catalysis and more recently to organic electronics. But the understanding of such processes requires that of bonding of atoms and molecules at solid surfaces. Nowadays a joint experimental and theoretical efforts, based on first principles calculations, strongly propelled by the enormously increased computer power, is often successful in determining adsorption sites, geometry, possible surface reconstruction, orientation of molecules, potential energy barriers, wavefunctions, vibrations, and more recently in a few cases many-body properties such as plasmon, polariton on metals, magnons, etc.. The density of states of the clean surface and of that of the projected surface bands onto the molecular eigenstates enjoy now clearer pictures. We can distinguish surface projected bulk states, resonant surface ones but also localized surface electronic states. Refined two photon photoemission experiments or inverse photoemission ones have detected image potential states determined by the long range Coulomb tails of the surface potential. Quantum well states localized between an adsorbate overlayer and the surface are also important. Surface states can be used as a tool to monitor adsorption but may also occur as a consequence of such phenomena.The study of molecule-surface interaction boast a great variety of systems and of

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Hybridization-induced charge rebalancing at the weakly interactive C60/Fe3O4(001) spinterface

Cited by 19 publications

References 34 publications

Activating the molecular spinterface

Activating the molecular spinterface

Controlling the Electronic and Structural Coupling of C₆₀ Nano Films on Fe(001) through Oxygen Adsorption at the Interface

Energetic Ground State Calculations, Electronic Band Structure at Surfaces

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Hybridization-induced charge rebalancing at the weakly interactive C60/Fe3O4(001) spinterface

Cited by 19 publications

References 34 publications

Activating the molecular spinterface

Activating the molecular spinterface

Controlling the Electronic and Structural Coupling of C60 Nano Films on Fe(001) through Oxygen Adsorption at the Interface

Energetic Ground State Calculations, Electronic Band Structure at Surfaces

Contact Info

Product

Resources

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Controlling the Electronic and Structural Coupling of C₆₀ Nano Films on Fe(001) through Oxygen Adsorption at the Interface