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Updated: May 30, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Infrared investigation of the phonon spectrum in the frustrated spin cluster compound FeTe(2)O(5)Cl
F Pfuner1, L Degiorgi, H Berger
1Laboratorium für Festkörperphysik, ETH Zürich, CH-8093 Zürich, Switzerland.
Abstract:
We present our optical investigations on the frustrated spin cluster compound FeTe(2)O(5)Cl, which develops a long-range antiferromagnetic order below 10 K. We measure the optical reflectivity from the far-infrared to the ultraviolet with polarized light. We focus our attention on the lattice dynamics by discussing the infrared-active modes. Our findings reveal a polarization dependence of the vibrational modes but which do not seem to be affected by structural anomalies linked to the magnetically ordered state at low temperatures.
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