Manifestation of the spin textures in the thermopower of MnSi

To identify possible spin texture contributions to thermoelectric transport, we present a detailed temperature and pressure dependence of thermopower $S$ in MnSi, as well as a low-temperature study of $S$ in a magnetic field. We find that $S/T$ reconstructs the $(p,T)$ phase diagram of MnSi encompassing the Fermi liquid, partially ordered, and non-Fermi liquid phases. Our results indicate that the latter two phases have essentially the same nature. In the partially ordered phase, $S(T)$ is strongly enhanced, which may be understood as a spiral-fluctuation-driven phase. A low temperature upturn in $S/T$ pertaining to the partial order phase persists up to the highest pressure, 24 kbar. Contrarily, a small suppression of $S(T)$ is observed in the ordered skyrmion lattice $A$ phase

Bi2Te_xSe_y series studied by resistivity and thermopower

We study the detailed temperature and composition dependence of the resistivity, $\rho(T)$, and thermopower, $S(T)$, for a series of layered bismuth chalcogenides Bi$_2$Te$_{3-x}$Se$_x$, and report the stoichiometry dependence of the optical band gap. In the resistivity of the most compensated member, Bi$_2$Te$_{2.1}$Se$_{0.9}$, we find a low-temperature plateau whose onset temperature correlates with the high-temperature activation energy. For the whole series $S(T)$ can be described by a simple model for an extrinsic semiconductor. By substituting Se for Te, the Fermi level is tuned from the valence band into the conduction band. The maximum values of $S(T)$, bulk band gap as well the activation energy in the resistivity are found for $x \approx 0.9$

Resilient critical infrastructure – Zagreb security forum 2017

The emphasis of the second ZSF entitled Resilient Critical Infrastructure is on the resistance to the challenges the infrastructure is or will be facing, especially in the domain of hybrid threats, as well as the ability of its rapid recovery and return to a state of functioning in order to meet the key needs of the population

Resilient critical infrastructure – Zagreb security forum 2017

The emphasis of the second ZSF entitled Resilient Critical Infrastructure is on the resistance to the challenges the infrastructure is or will be facing, especially in the domain of hybrid threats, as well as the ability of its rapid recovery and return to a state of functioning in order to meet the key needs of the population

Hybrid Challenges Require Hybrid, Scientifically Based, Responses

New security challenges are looking for new security paradigms in order that state and societies can successfully face with them on preventive level. Due to the rapid influence of hybrid threats to almost all areas of our lives today, we must change our attitude toward those problems and introduce and transform existing intelligence and security studies as a separate science in order to prepare our societies for security challenges that are already here

Cooperation between intelligence and security systems of German Democratic Republic and Yugoslavia

Intelligence and security system of GDR and Yugoslavia, despite the fact that it might look strange, did not have significant level of cooperation. The main reason for that was a huge political and ideological difference on political level. Each of them had their own, “unique”, way to create socialist society under the leadership of Communist party in power. But, despite the fact that they did not had any significant cooperation, both of those systems were established and organised according Russian intelligence and security systems. Repression against their citizens was one of the main similarities between those two systems. Due to the existence of the documents in German BStU it is possible to research their relations in those time of Cold war conflict, and huge antagonism between NATO and WB