arXiv Open Access 2018

Lattice dynamics of the cluster chain compounds M2Mo6Se6

Liam Gannon Lilia Boeri Christopher A. Howard Patrick Gougeon Philippe Gall +4 lainnya

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Abstrak

The lattice dynamics of members of the M2Mo6Se6 family of materials with guest ions M = K, Rb, Cs, In, and Tl has been studied using inelastic x-ray scattering and Raman spectroscopy at room temperature, as well as by ab-initio calculations. We find a good match between calculations and experiment, both for structure factors (Eigenvectors) and for the calculated phonon frequencies. The observed lattice dynamics for Tl2Mo6Se6 show no signs of anharmonicity or absence of avoided dispersion crossings, thus ruling out previously hypothesised rattling phonon modes. The reduced mode energies for In2Mo6Se6 are identified as only partially responsible for the lower superconducting transition temperature Tc in this material when compared to Tl2Mo6Se6.

Topik & Kata Kunci

cond-mat.supr-con

Penulis (9)

Liam Gannon

Lilia Boeri

Christopher A. Howard

Patrick Gougeon

Philippe Gall

Michel Potel

Diala Salloum

Alexander P. Petrović

Moritz Hoesch

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APA MLA BibTeX

Gannon, L., Boeri, L., Howard, C.A., Gougeon, P., Gall, P., Potel, M. et al. (2018). Lattice dynamics of the cluster chain compounds M2Mo6Se6. https://arxiv.org/abs/1806.08153

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Informasi Jurnal

Tahun Terbit: 2018
Bahasa: en
Sumber Database: arXiv
Akses: Open Access ✓