The injection of spin-polarized electrons across interfaces is central to many technologies, and hence, it is important to understand the main ingredients controlling it. Here, we demonstrate that the spin dependence of ultrafast electron transfer at Ar/Co(0001) and Ar/Fe(110) interfaces is rooted in the details of the spin-split surface band structures. The injection dynamics are particularly sensitive to the sizes (in reciprocal space) of projected electronic band gaps around Γ̅. Our calculations back that minority electrons are injected significantly faster than majority electrons in line with recently reported experimental injection times. A simple tunnelling model incorporating the spin-dependent gap sizes confirms that this ingredient is crucial to rationalize the experimental results.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.jpclett.0c01946 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Enhancing Chemoselectivity of On-Surface Reactions on Reconstructed Au(110): The Case of a Pentalene-Bridged Polyacene Analogue.
J Am Chem Soc
January 2025
Nanotech@surfaces Laboratory, Empa - Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland.
Polyacene analogues, consisting of short acene segments separated by nonbenzenoid rings, offer intriguing electronic properties and magnetic interactions. Pentalene-bridged polyacenes (PPs), in particular, hold promise for enhancing the electrical conductivity and potential open-shell ground states. However, PPs have remained elusive in solution chemistry due to poor solubility and limited synthetic protocols.
View Article and Find Full Text PDFLarge exciton binding energy in a bulk van der Waals magnet from quasi-1D electronic localization.
Nat Commun
January 2025
Department of Physics, University of Michigan, Ann Arbor, MI, USA.
Excitons, bound electron-hole pairs, influence the optical properties in strongly interacting solid-state systems and are typically most stable and pronounced in monolayer materials. Bulk systems with large exciton binding energies, on the other hand, are rare and the mechanisms driving their stability are still relatively unexplored. Here, we report an exceptionally large exciton binding energy in single crystals of the bulk van der Waals antiferromagnet CrSBr.
View Article and Find Full Text PDFLow-Level Fe Doping in CoMoO Enhances Surface Reconstruction and Electronic Modulation Creating an Outstanding OER Electrocatalyst for Water Splitting.
Inorg Chem
January 2025
Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China.
Efficient and stable nonprecious metal-based oxygen evolution reaction (OER) electrocatalysts are pivotal for water electrolysis technology. Herein, we are reporting an effective strategy for fabricating efficient Co-based OER electrocatalysts by low-level Fe doping in CoMoO to boost surface reconstruction and electronic modulation, which resulted in excellent OER electroactivity consequently. Our findings reveal that a mere 5.
View Article and Find Full Text PDFGlycerol Adsorption on TiO Surfaces: A Systematic Periodic DFT Study.
ChemistryOpen
January 2025
Facultad de Ciencias Básicas, Universidad de Medellín, 050026, Medellín, Colombia.
Conversion of glycerol to added-value products is desirable due to its surplus during biodiesel synthesis. TiO has been the most explored catalyst. We performed a systematic study of glycerol adsorption on anatase (101), anatase (001), and rutile (110) TiO at the Density Functional Theory level.
View Article and Find Full Text PDFLaser ablation propulsion is an important micro-propulsion system for microsatellites. Polymers with carbon added and carbon-based nanomaterial have been demonstrated as propellants with high impulse coupling coefficient (C). Among them, the carbon nanotube film exhibits a low ablation threshold fluence of 25 mJ/cm, which shows its potential for propulsion under low laser fluence.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!