Abstract
The effect of the hopping on the magnetic and dieclectric properties of the box mode introduced byA. Zawadowski andM. H. Cohen [1] are considered.
By symmetry reasoning it is shown that the free energy is an even function of the hopping rate as well as of the external electric field.
It is proved that at finite temperature when the hopping is small enough the hopping processes in various boxes are uncorrelated. Based on this the magnetic and dielectric susceptibilities are calculated up to the second order of the hopping rate.
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References
A. Zawadowski andM. H. Cohen, Phys. Rev.,B17, 1730, 1977.
K. Huang, Statistical Physics, John Wiley Sons, Inc.; New York-London, 1963.
F. Woynarovich, Solid State Comm.,24, 797, 1977.
P. Fazekas andA. Kövér, KFKI-1978-48 (publication of the Central Research Institute for Physics, Budapest).
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Khue, N.M. Effect of weak hopping on the behaviour of the one-dimensional box model. Acta Physica 50, 37–59 (1981). https://doi.org/10.1007/BF03157956
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DOI: https://doi.org/10.1007/BF03157956