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          Institute: MPI für Dynamik und Selbstorganisation     Collection: Molekulare Wechselwirkung     Display Documents

ID: 711943.0, MPI für Dynamik und Selbstorganisation / Molekulare Wechselwirkung
The Response of a He-3 Fermi Liquid Droplet to Vibronic Excitation of an Embedded Glyoxal Molecule
Authors:Benedek, Giorgio; Hizhnyakov, Vladimir; Toennies, Jan Peter
Date of Publication (YYYY-MM-DD):2014-08-21
Title of Journal:Journal of Physical Chemistry A
Issue / Number:33
Start Page:6574
End Page:6583
Sequence Number of Article:10.1021/jp503184d
Review Status:not specified
Audience:Not Specified
Abstract / Description:The zero-phonon line (ZPL) and the sideband in the vibronic spectrum of a single glyoxal molecule inside a He-3 droplet are analyzed within the framework of the Lax formalism. The new theory takes full account of the coupling of the molecule to the single particle-hole (PH) and collective excitations of the doped Fermionic droplet. The effect on the coupling of the wavevector dependence of the effective He-3 mass and the large local density of the first He-3 shell, resulting from the interaction with the chromophore, are also included in the theory. By fitting of a coupling parameter and the phase factor between the PH and collective response functions, the shape and relative intensity of the observed ZPL and its slowly decreasing multiexcitation sideband are well-reproduced. The new theory is consistent with the previous explanation of the surprisingly sharp phonon line superimposed on the sideband in terms of the dense first He-3 shell, which acts as a Helmholtz resonator for the zero sound of the droplet.
External Publication Status:published
Document Type:Article
Communicated by:Folkert Müller-Hoissen
Affiliations:MPI für Dynamik und Selbstorganisation/Molekulare Wechselwirkung
External Affiliations:Univ Basque Country EHU UPV, Donostia Int Phys Ctr DIPC, Donostia San Sebastian 20018, Spain
Univ Milano Bicocca, Dipartimento Sci Mat, I-20125 Milan, Italy
Univ Tartu, Inst Phys, EE-202400 Tartu, Estonia
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