Naslov
Phonon properties of materials with a different structural complexity

Autori
Batistić, Ivo

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, ostalo

Skup
C-MAC Euroschool in Material Science 2017: Physical properties I – electrons, phonons and interactions in complex systems

Mjesto i datum
Split, Hrvatska, 10.09.2017. - 15.09.2017

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
Phonon properties, disordered medium, quasi-crystals

Sažetak
Complexity Lecture will start with a brief introduction into a harmonic oscillator, its quantization, its application to a general system of coupled atoms/ions by harmonic forces and to the notion of phonons. The structural complexity of materials can be result of a long range aperiodicity, a non-commensurate lattice distortion, the defect presence (local and extended ones), etc. Usually, realistic studies of phonon properties in structurally complex systems involve numerically intense calculations and/or heavy mathematical formalism. In this lecture we shall cover only very simple cases which can be done analytically. These simple cases can be generalized in order to get an insight into more complex situations. Particular attention will be paid to long wave limit where generally complex equation of motion can be simplified. Some of these results will be applied to calculation of few thermodynamic and transport properties. Tutorial will consist of numerical calculations and simulations with already prepared python scripts. Participants would be able to investigate how calculation/simulation results depends on the parameters in the problem under consideration. Knowledge of python programming language is recommended but it is not required.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA