Numerical modeling of 3D discrete breathers in fcc Ni

Discrete breathers in protein structures.

Recently, using a numerical surface cooling approach, we have shown that highly energetic discrete breathers (DBs) can form in the stiffest parts of nonlinear network models of large protein structures. In the present study, using an analytical approach, we extend our previous results to low-energy discrete breathers as well as to smaller proteins. We confirm and further scrutinize the striking...

Discrete breathers in carbon nanotubes

We study large-amplitude oscillations of carbon nanotubes with chiralities (m, 0) and (m,m) and predict the existence of spatially localized nonlinear modes in the form of discrete breathers. In nanotubes with the index (m, 0) we find three types of discrete breathers associate with longitudinal, radial, and torsion anharmonic vibrations, however only the twisting breathers are found to be nonr...

Discrete breathers in Josephson arrays.

Since the original proposal of 1996 by Floria et al. [Europhys. Lett. 36, 539 (1996)] of intrinsic localization in Josephson ladders, many efforts have been devoted to the theoretical, numerical, and experimental study of such dynamical states in Josephson arrays. Such efforts have already produced around 20 papers on the subject. In this article we will try to review the basic aspects of the p...

Discrete Breathers in Deformed Graphene

MAGNETOVOLUME EFFECT IN FERROMAGNETIC METALS : NUMERICAL RESULTS FOR BCC Fe AND FCC Ni

The magnetovolume effect in ferromagnetic bcc Fe and fcc Ni is estimated numerically in the fixed moment method by using the LMTO method and the local spin density approximation. The obtained results are compared with the experimental results. The magnetovolume effect is discussed by using the local spin density approximation [I-31 or by using the Stoner model where the volume dependence of the...