Lattice vibrations in KCuF 3 | Zendy

Deisenhofer J. | Zendy; Schmidt M. | Zendy; Wang Zhe | Zendy; Kant Ch. | Zendy; Mayr F. | Zendy; Schrettle F. | Zendy; Krug von Nidda H.A. | Zendy; Ghigna P. | Zendy; Tsurkan V. | Zendy; Loidl A. | Zendy

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Lattice vibrations in KCuF 3

Author(s) -

Deisenhofer J.,

Schmidt M.,

Wang Zhe,

Kant Ch.,

Mayr F.,

Schrettle F.,

Krug von Nidda H.A.,

Ghigna P.,

Tsurkan V.,

Loidl A.

Publication year - 2011

Publication title -

annalen der physik

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.009

H-Index - 68

eISSN - 1521-3889

pISSN - 0003-3804

DOI - 10.1002/andp.201100026

Subject(s) - tetragonal crystal system , phonon , condensed matter physics , infrared , lattice vibration , vibration , physics , lattice (music) , polarization (electrochemistry) , normal mode , materials science , optics , quantum mechanics , chemistry , phase (matter) , acoustics

We report on polarization dependent reflectivity measurements in KCuF 3 in the far‐infrared frequency regime. The observed IR active phonons at room temperature are in agreement with the expected modes for tetragonal symmetry. We observe a splitting of one mode already at 150 K and the appearance of a new mode in the vicinity of the Néel temperature.

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