INFLUENCE OF CRYSTAL FIELD EXCITATIONS COUPLED TO LATTICE VIBRATIONS ON THERMODYNAMICAL PROPERTIES OF A TWO-LEVEL PARAMAGNET-Reference-Cited by-同舟云学术

INFLUENCE OF CRYSTAL FIELD EXCITATIONS COUPLED TO LATTICE VIBRATIONS ON THERMODYNAMICAL PROPERTIES OF A TWO-LEVEL PARAMAGNET

Published:2004-01-30 Issue:03 Volume:18 Page:337-348
ISSN:0217-9792
Container-title:International Journal of Modern Physics B
language:en
Short-container-title:Int. J. Mod. Phys. B

Author:

ULNER J.¹,PEISERT J.²,DURCZEWSKI K.¹

Affiliation:

1. Institute for Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, PL–50-950 Wrocław 2, Poland

2. Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, PL–50-370 Wrocław, Poland

Abstract

A two-level crystal field model in the presence of the phonon field is considered. Spins are arranged on a lattice and weakly coupled to the lattice oscillations of small amplitudes. The anticommutator Green function perturbative method up to the second order in the coupling constant is applied to find thermodynamical quantities. The magnetic spectral function, describing the crystal field excitations, influences these quantities. The effect is studied numerically and illustrated in figures. In particular, the influence of the coupling on the Schottky specific heat is shown.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217979204023945

Reference20 articles.

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