Author
R Fedorowich
Bio: R Fedorowich is an academic researcher from Hungarian Academy of Sciences. The author has an hindex of 1, co-authored 1 publications receiving 15 citations.
Papers
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TL;DR: In this article, a theoretical substantiation of the model of hot electrons in nanoparticles is presented, showing that the major physical factor that permits the generation of hot particles is the dramatic reduction (by orders of magnitude) of the electron-lattice energy transfer in the particles whose size is smaller than the mean free path of electrons in the volume.
118 citations
TL;DR: In this paper, Fuchs-Sondheimer and Mayadas-Shatzkes showed that the relationship between the resistivite and the structure cristallographique of couches minces of bismuth can be investigated in a large domaine of temperature (20-500 K).
26 citations
TL;DR: In this article, two types of growth hillocks (marked by Type I and Type II) have been identified in vapour deposited thin films, which indicate the participation of foreign atoms in the film formation and their accumulation along the moving growth steps developing stable phases.
Abstract: Two types of growth hillocks (marked by Type I and Type II) have been identified in vapour deposited thin films. Type I develops inside the surface of large crystals, while Type II represents individual single crystals protruded over the average surface area of the film. Formation of Type I hillocks indicates the participation of foreign atoms in the film formation and their accumulation along the moving growth steps developing stable phases. Type II hillocks develop at higher growth rates in preferential crystallographic directions due either to the crystallography of crystals (e.g. Bi), or to the effect of selective uptake of foreign species on the crystallographic faces of different Miller indices developing covering layers on different surface areas controlling also the coalescence of the grains. The correlation between the partial pressure of oxygen and the formation of hillocks in Al films proved the effectivity of the last phenomenon.
21 citations
TL;DR: In this paper, the authors reviewed the advances that have been made during the last five years in the field of theoretical description of electronic scattering at grain boundaries and derived analytical expressions for the transport parameters of columnar, monocrystalline and polycrystalline films.
Abstract: Thin metal films can be deposited in a number of different ways. As a result several types of defects or impurities are frozen in the film. In most practical cases films exhibit grain boundaries which play a decisive role in transport properties. This paper reviews the advances that have been made during the last five years in the field of theoretical description of electronic scattering at grain boundaries. Analytical expressions for the transport parameters (such as resistivity, temperature coefficient of resistivity and thermopower) of columnar, monocrystalline and polycrystalline films are derived. Care has been taken to give linearized equations for the transport phenomena. Methods for extracting grain parameters are outlined. Special attention is focused on correlated size effects. Imperfection or impurity effects on the film resistivity and thermopower are considered. Methods for determining the energetic parametersU andV and the componentS
1 of the thermopower associated with imperfections are proposed. Special emphasis is placed on procedures for identifying imperfections by simultaneous study of the restructuration processes induced by thermal ageing and of the changes in transport parameters on ageing.
19 citations
TL;DR: In this article, the surface structure and oxidation of thin films of bismuth vacuum deposited onto heated glass substrates were investigated and it was shown that temporal variations in the optical properties were due to the growth of an extraneous surface layer of Bismuth oxide.
13 citations