Author(s):
1. Sinisa Vucenovic, Republic of Srpska, Bosnia and Herzegovina
2. Jovan Šetrajčić, Akademija nauka i umjetnosti Republike Srpske, Serbia
3. Dušan Ilić, Serbia

Abstract:
The basic problem that follows transition of substance to the superconducting state is that transition is made on low temperatures (up to -100 oC in cupper-oxide ceramics) and it is necessary to have special cooling equipment. The newest temperature record is 250 K in lanthanum hydride but this material is have to been pressurized with very high pressure (around 170 GPa) to make superconducting state possible. In our research we studied behavior of charged particle system in phonon field when modeled samples are low dimensional crystalline films. In extreme conditions, for example within high pressures, energy gaps for electrons and phonons are wide and they provide high temperature of activation (even more over 150 K). In this case electron-phonon interaction could explain high critical temperature in lanthanum hydride.

Key words:
superprovodnost, lantan-hidrid, visoki pritisak, ultratanki filmovi, elektron-fonon interakcija

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
22.07.2019.

Conference:
Contemporary Materials 2019 - Savremeni Materijali