Quenching of Symmetry Breaking in Resonant Inelastic X-Ray Scattering by Detuned Excitation

Skytt, P.; Glans, Peter; Guo, Jinghua; Gunnelin, Kerstin M.; Såthe, Conny; Nordgren, Joseph; Gel’mukhanov, Faris; Cesar, Amary; Ågren, Hans

doi:10.1103/physrevlett.77.5035

Cited by 121 publications

(88 citation statements)

References 12 publications

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“…Although the present compounds are not pure -electron systems one can still regard the amount of intensity in the ''forbidden'' A band region as an indication of the strength of these interactions. As shown recently, 38,39 the effective strength of the electron-phonon interaction can be significantly reduced even by small detuning of the incident x-ray photon frequency below the absorption band.…”

Section: Discussionmentioning

confidence: 98%

Resonant and nonresonant x-ray scattering spectra of some poly(phenylenevinylene)s

Guo

Magnuson

Såthe

et al. 1998

The Journal of Chemical Physics

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The electronic structure of some poly͑phenylenevinylene͒s have been investigated by resonant and nonresonant x-ray inelastic scattering spectroscopies. The nonresonant as well as all resonant spectra for each polymer demonstrate benzene-like features, indicating a local character of the x-ray emission in which the phenyl ring acts as a building block. Theoretical simulations of x-ray energies and intensities taking the repeat unit as a model molecule of the polymer agree with the experimental spectra fairly well. The edges of the occupied bands have been identified in the nonresonant spectra of each polymer. By subtracting the emission energy of the highest occupied molecular orbital in the nonresonant spectrum from the core excitation energy in the resonant spectrum an alternative way to determine the optical band gap is obtained. As for free benzene the outer band in the polymer spectra show a depletion of the emission going from the nonresonant to the resonant x-ray emission spectra. It is demonstrated that this transition, which is strictly symmetry forbidden for free benzene, becomes effectively forbidden in the polymer case as a result of strong interference effects, and it is argued that this is the general case for resonant x-ray emission of conjugated polymers as far as the frozen orbital approximation holds.

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Section: Discussionmentioning

confidence: 98%

Resonant and nonresonant x-ray scattering spectra of some poly(phenylenevinylene)s

Guo

Magnuson

Såthe

et al. 1998

The Journal of Chemical Physics

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“…For example, it was demonstrated that a dynamical symmetry breaking in molecules occurring on the time scale of the core-hole lifetime can be studied due to the symmetry dependence of the x-ray emission intensities on the selection rules. 2,3 Polarization and anisotropy of x-ray emission can be used to study orbital components, bond directions, and molecular orbital symmetries. [4][5][6] Recently, molecular-field effects a) Author to whom correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Resonant inelastic x-ray scattering at the limit of subfemtosecond natural lifetime

Marchenko

Journel

Marin

et al. 2011

The Journal of Chemical Physics

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We present measurements of the resonant inelastic x-ray scattering (RIXS) spectra of the CH 3 I molecule in the hard-x-ray region near the iodine L 2 and L 3 absorption edges. We show that dispersive RIXS spectral features that were recognized as a fingerprint of dissociative molecular states can be interpreted in terms of ultrashort natural lifetime of ∼200 attoseconds in the case of the iodine L-shell core-hole. Our results demonstrate the capacity of the RIXS technique to reveal subtle dynamical effects in molecules with sensitivity to nuclear rearrangement on a subfemtosecond time scale.

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“…superconducting materials [8], femtosecond dynamics [10], and chemical bonding mechanism [11,12] by detuning from resonance, and so on. Final states probed via such a channel, RIXS or XRS, are related to eigenvalues of the ground state Hamiltonian.…”

Section: Resonant X-ray Emission Spectroscopymentioning

confidence: 99%

“…The introduction of selectively excited soft X-ray emission has opened a new field of study by disclosing many new possibilities of soft resonant inelastic X-ray scattering (RIXS). Among the new tools available with this technique, one can mention site selectivity in high-T c superconducting materials [8], low energy excitations in correlated materials [9], and femtosecond dynamics [10] and chemical bonding mechanisms [11,12] by detuning from resonance, and so on.…”

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confidence: 99%

Soft X‐Ray Absorption and Emission Spectroscopy in the Studies of Nanomaterials

Guo¹

2010

X‐Rays in Nanoscience

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Quenching of Symmetry Breaking in Resonant Inelastic X-Ray Scattering by Detuned Excitation

Cited by 121 publications

References 12 publications

Resonant and nonresonant x-ray scattering spectra of some poly(phenylenevinylene)s

Resonant and nonresonant x-ray scattering spectra of some poly(phenylenevinylene)s

Resonant inelastic x-ray scattering at the limit of subfemtosecond natural lifetime

Soft X‐Ray Absorption and Emission Spectroscopy in the Studies of Nanomaterials

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