Ultrafast Probing of Core Hole Localization in N 2

Abstract

Although valence electrons are clearly delocalized in molecular bonding frameworks, chemists and physicists have long debated the question of whether the core vacancy created in a homonuclear diatomic molecule by absorption of a single x-ray photon is localized on one atom or delocalized over both. We have been able to clarify this question with an experiment that uses Auger electron angular emission patterns from molecular nitrogen after inner-shell ionization as an ultrafast probe of hole localization. The experiment, along with the accompanying theory, shows that observation of symmetry breaking (localization) or preservation (delocalization) depends on how the quantum entangled Bell state created by Auger decay is detected by the measurement.

Keywords

Delocalized electronHomonuclear moleculeAtomic physicsDiatomic moleculePhysicsIonizationElectronValence (chemistry)Atom (system on chip)ChemistryMolecular physicsMoleculeQuantum mechanics

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Publication Info

Year: 2008
Type: article
Volume: 320
Issue: 5878
Pages: 920-923
Citations: 188
Access: Closed

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APA Style

                            
                                
                                    M. S. Schöffler, 
                                
                                    J. Titze, 
                                
                                    N. Petridis
                                
                                et al.
                            
                            (2008). 
                            Ultrafast Probing of Core Hole Localization in N <sub>2</sub>. 
                            Science
                            , 320
                            (5878)
                            , 920-923.
                            https://doi.org/10.1126/science.1154989
                        

Identifiers

DOI: 10.1126/science.1154989

Ultrafast Probing of Core Hole Localization in N <sub>2</sub>