Double-quantum-coherence attosecond x-ray spectroscopy of spatially separated, spectrally overlapping core-electron transitions

Abstract

X-ray four-wave mixing signals generated in the $k_1+k_2-k_3$ phase-matching direction are simulated for N1s transitions in para-nitroanline and two-ring hydrocarbons disubstituted with an amine and a nitroso groups. The two-dimensional x-ray correlation spectra (2DXCS) provide background-free probes of couplings between core-electron transitions even for multiple core shells of the same type. Features attributed to couplings between spatially-separated core transitions connected by delocalized valence excitations provide information about molecular geometry and electronic structure unavailable from linear near-edge x-ray absorption (XANES).

21 pages, 9 figures

References in corpus (2)

• Coherent ultrafast core-hole correlation spectroscopy: x-ray analogues of multidimensional NMR
• Multiple Core-Hole Coherence in X-Ray Four-Wave-Mixing Spectroscopies

Cited by in corpus (6)

• Two-Dimensional Stimulated Resonance Raman Spectroscopy of Molecules with Broadband X-ray Pulses
• Manipulating Core-Excitations in Molecules by X-ray Cavities
• Double-core Excitations in Formamide Can Be Probed by X-ray Double-quantum-coherence Spectroscopy
• Photon echo using imperfect X-ray pulse with phase fluctuation
• Many-body Green's function approach to attosecond nonlinear X-ray spectroscopy
• Generation of highly mutually coherent hard x-ray pulse pairs with an amplitude-splitting delay line