Title :
Study of the ferroelectric phase transition in GeTe using time-domain THz spectroscopy
Author :
Filip Kadlec;Christelle Kadlec;Petr Kužel;Dominic Lencer;Peter Jost;Matthias Wuttig
Author_Institution :
Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic
Abstract :
GeTe is a conducting ferroelectric with a very simple crystal lattice. Since decades, its phase transition was deemed displacive; recent evidence suggested an order-disorder type. High-temperature THz spectra of thin films reveal a new sub-THz excitation but no critical phonon softening is observed.
Keywords :
"Conductivity","Iron","Spectroscopy","Temperature measurement","Heating","Phonons","Substrates"
Conference_Titel :
Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on
Print_ISBN :
978-1-4577-0510-6
Electronic_ISBN :
2162-2035
DOI :
10.1109/irmmw-THz.2011.6104783
