title: Double-core excitations in formamide can be probed by X-ray double-quantum-coherence spectroscopy.
abstract: The attosecond, time-resolved X-ray double-quantum-coherence four-wave mixing signals of formamide at the nitrogen and oxygen K-edges are simulated using restricted excitation window time-dependent density functional theory and the excited core hole approximation. These signals, induced by core exciton coupling, are particularly sensitive to the level of treatment of electron correlation, thus providing direct experimental signatures of electron and core-hole many-body effects and a test of electronic structure theories.
authors: Department of Chemistry, University of California, 450 Rowland Hall, Irvine, California 92697, USA.
authors: Yu
authors: Y
authors: Zhang
authors: Department of Chemistry, University of California, 450 Rowland Hall, Irvine, California 92697, USA.
authors: Daniel
authors: D
authors: Healion
authors: Department of Chemistry, University of California, 450 Rowland Hall, Irvine, California 92697, USA.
authors: Jason D
authors: JD
authors: Biggs
authors: Department of Chemistry, University of California, 450 Rowland Hall, Irvine, California 92697, USA.
authors: Shaul
authors: S
authors: Mukamel
mesh_terms: D005559:Formamides / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D010100:Oxygen / Q000737:chemistry; D011789:Quantum Theory; D056928:X-Ray Absorption Spectroscopy
chemical_list: D005559:Formamides; C031066:formamide; D009584:Nitrogen; D010100:Oxygen