Phonons in Confinement and the Boson Peak Using Nuclear Inelastic Absorption
T. Asthalter, M. Bauer, U. van Buerck, I. Sergueev, H. Franz, A.I. Chumakov, Hyperfine Interactions 43 (2002) 77–83.
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Journal Article
| Published
| English
Author
Asthalter, T.;
Bauer, MatthiasLibreCat 
;
van Buerck, U.;
Sergueev, I.;
Franz, H.;
Chumakov, A. I.
;
van Buerck, U.;
Sergueev, I.;
Franz, H.;
Chumakov, A. I.Department
Abstract
We have applied nuclear inelastic absorption (NIA) to the molecular glass former dibutylphthalate/ferrocene, both in bulk and in nanoporous matrices having pore sizes of 50 and 25 A, respectively. The quantity g(E)/E2, where g(E) is the vibrational phonon density of states (VDOS) of the resonant nuclei, exhibits a pronounced maximum at low energies. Confinement in pores leads to a suppression of the VDOS below 1.5 meV, independent of the pore size. Also in the scaled heat capacity C(T)/T3, we observe a decrease of the peak maximum for low temperatures. Our observations are discussed in the light of experimental and theoretical results on nanocrystals and a recent theoretical model for the boson peak.
Publishing Year
Journal Title
Hyperfine Interactions
Volume
43
Issue
12
Page
77-83
LibreCat-ID
Cite this
Asthalter T, Bauer M, van Buerck U, Sergueev I, Franz H, Chumakov AI. Phonons in Confinement and the Boson Peak Using Nuclear Inelastic Absorption. Hyperfine Interactions. 2002;43(12):77-83. doi:10.1023/A:1025434512268
Asthalter, T., Bauer, M., van Buerck, U., Sergueev, I., Franz, H., & Chumakov, A. I. (2002). Phonons in Confinement and the Boson Peak Using Nuclear Inelastic Absorption. Hyperfine Interactions, 43(12), 77–83. https://doi.org/10.1023/A:1025434512268
@article{Asthalter_Bauer_van Buerck_Sergueev_Franz_Chumakov_2002, title={Phonons in Confinement and the Boson Peak Using Nuclear Inelastic Absorption}, volume={43}, DOI={10.1023/A:1025434512268}, number={12}, journal={Hyperfine Interactions}, author={Asthalter, T. and Bauer, Matthias and van Buerck, U. and Sergueev, I. and Franz, H. and Chumakov, A. I.}, year={2002}, pages={77–83} }
Asthalter, T., Matthias Bauer, U. van Buerck, I. Sergueev, H. Franz, and A. I. Chumakov. “Phonons in Confinement and the Boson Peak Using Nuclear Inelastic Absorption.” Hyperfine Interactions 43, no. 12 (2002): 77–83. https://doi.org/10.1023/A:1025434512268.
T. Asthalter, M. Bauer, U. van Buerck, I. Sergueev, H. Franz, and A. I. Chumakov, “Phonons in Confinement and the Boson Peak Using Nuclear Inelastic Absorption,” Hyperfine Interactions, vol. 43, no. 12, pp. 77–83, 2002, doi: 10.1023/A:1025434512268.
Asthalter, T., et al. “Phonons in Confinement and the Boson Peak Using Nuclear Inelastic Absorption.” Hyperfine Interactions, vol. 43, no. 12, 2002, pp. 77–83, doi:10.1023/A:1025434512268.
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