Dynamics of nonlinear diatomic lattices
نویسندگان
چکیده
منابع مشابه
Nonlinear surface modes in monoatomic and diatomic lattices
We investigate the structure and stability of nonlinear surface modes in one-dimensional monoatomic and diatomic lattices. For a monoatomic lattice, we show analytically and numerically that nonlinearity can support a stable surface mode whose maximum amplitude is shifted from the surface. In the limit of strong nonlinearity when this mode is localized on a few atoms near the surface, we find t...
متن کاملNonlinear dynamics and surface diffusion of diatomic molecules.
The motion of molecules on solid surfaces is of interest for technological applications, but it is also a theoretical challenge. We study the deterministic and thermal diffusive dynamics of a dimer moving on a periodic substrate. The deterministic motion of the dimer displays strongly nonlinear features and chaotic behavior. The dimer thermal diffusive dynamics deviates from simple Arrhenius be...
متن کاملSoliton dynamics in deformable nonlinear lattices.
We describe wave propagation and soliton localization in photonic lattices, which are induced in a nonlinear medium by an optical interference pattern, taking into account the inherent lattice deformations at the soliton location. We obtain exact analytical solutions and identify the key factors defining soliton mobility, including the effects of gap merging and lattice imbalance, underlying th...
متن کاملNonlinear wave dynamics in honeycomb lattices
We study the nonlinear dynamics of wave packets in honeycomb lattices and show that, in quasi-onedimensional configurations, the waves propagating in the lattice can be separated into left-moving and right-moving waves, and any wave packet composed of only left (or only right) movers does not change its intensity structure in spite of the nonlinear evolution of its phase. We show that the propa...
متن کاملthe study of bright and surface discrete cavity solitons dynamics in saturable nonlinear media
امروزه سالیتون ها بعنوان امواج جایگزیده ای که تحت شرایط خاص بدون تغییر شکل در محیط منتشر می-شوند، زمینه مطالعات گسترده ای در حوزه اپتیک غیرخطی هستند. در این راستا توجه به پدیده پراش گسسته، که بعنوان عامل پهن شدگی باریکه نوری در آرایه ای از موجبرهای جفت شده، ظاهر می گردد، ضروری است، زیرا سالیتون های گسسته از خنثی شدن پراش گسسته در این سیستم ها بوسیله عوامل غیرخطی بوجود می آیند. گسستگی سیستم عامل...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Miskolc Mathematical Notes
سال: 2003
ISSN: 1787-2405,1787-2413
DOI: 10.18514/mmn.2003.62