Physics – Condensed Matter – Materials Science
Scientific paper
2008-08-22
Physics
Condensed Matter
Materials Science
25 pages, 12 Figures, 1 table, submitted to PRB
Scientific paper
10.1103/PhysRevB.78.224302
During the past five years the low temperature heat capacity of simple semiconductors and insulators has received renewed attention. Of particular interest has been its dependence on isotopic masses and the effect of spin- orbit coupling in ab initio calculations. Here we concentrate on the lead chalcogenides PbS, PbSe and PbTe. These materials, with rock salt structure, have different natural isotopes for both cations and anions, a fact that allows a systematic experimental and theoretical study of isotopic effects e.g. on the specific heat. Also, the large spin-orbit splitting of the 6p electrons of Pb and the 5p of Te allows, using a computer code which includes spin-orbit interaction, an investigation of the effect of this interaction on the phonon dispersion relations and the temperature dependence of the specific heat and on the lattice parameter. It is shown that agreement between measurements and calculations significantly improves when spin-orbit interaction is included.
Cardona Manuel
Gonze X. C.
Kremer Reinhard K.
Lauck Ronald
Romero Aldo H.
No associations
LandOfFree
Lattice Properties of PbX (X = S, Se, Te): Experimental Studies and ab initio Calculations Including Spin-Orbit Effects does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Lattice Properties of PbX (X = S, Se, Te): Experimental Studies and ab initio Calculations Including Spin-Orbit Effects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lattice Properties of PbX (X = S, Se, Te): Experimental Studies and ab initio Calculations Including Spin-Orbit Effects will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-128848