Pressure dependence of phonon modes across the tetragonal to collapsed-tetragonal phase transition inCaFe2As2
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چکیده
منابع مشابه
Formation of As-As Interlayer Bonding in the collapsed tetragonal phase of NaFe2As2 under pressure
NaFe2As2 is investigated experimentally using powder x-ray diffraction and Raman spectroscopy at pressures up to 23 GPa at room temperature and using ab-initio calculations. The results reveal a pressure-induced structural modification at 4 GPa from the starting tetragonal to a collapsed tetragonal phase. We determined the changes in interatomic distances under pressure that allowed us to conne...
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Subhasish Mandal,1,* R. E. Cohen,1,2 and K. Haule3 1Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA 2Department of Earth Sciences, University College London, Gower Street, London WC1E 6BT, United Kingdom 3Department of Physics, Rutgers University, Piscataway, New Jersey 08854, USA (Received 21 May 2014; revised manuscript received 14 July 2014; published 6 ...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2010
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.81.144502