Zobrazeno 1 - 10
of 601
pro vyhledávání: '"Tuomisto, F."'
Autor:
Jaroszynska, A., Grzanka, E., Grabowski, M., Staszczak, G., Prozheev, I., Jakiela, R., Tuomisto, F., Bockowski, M.
Publikováno v:
In Applied Surface Science 15 July 2023 625
Publikováno v:
In Journal of Crystal Growth 1 October 2020 547
Autor:
Tuomisto, F., Makkonen, I., Heikinheimo, J., Granberg, F., Djurabekova, F., Nordlund, K., Velisa, G., Bei, H., Xue, H., Weber, W.J., Zhang, Y.
Publikováno v:
In Acta Materialia 1 September 2020 196:44-51
Autor:
Kilanski, L., Rauch, C., Tuomisto, F., Podgorni, A., Dynowska, E., Dobrowolski, W., Fedorchenko, I. V., Marenkin, S. F.
Positron annihilation spectroscopy is used to study point defects in Zn/1-x/Mn/x/GeAs/2/ crystals with low Mn content 0 < x < 0.042 with disordered zincblende and chalcopyrite structure. The role of negatively charged vacancies and non-open-volume de
Externí odkaz:
http://arxiv.org/abs/1404.1179
We investigate the modeling of positronium (Ps) states and their pick-off annihilation trapped at open volumes pockets in condensed molecular matter. Our starting point is the interacting many-body system of Ps and a He atom because it is the smalles
Externí odkaz:
http://arxiv.org/abs/1310.7284
Publikováno v:
Phys. Rev. A 89, 052707 (2014)
In this work we define single-particle potentials for a positron and a positronium atom interacting with light atoms (H, He, Li and Be) by inverting a single-particle Schr\"odinger equation. For this purpose, we use accurate energies and positron den
Externí odkaz:
http://arxiv.org/abs/1305.6809
Acceptor-type defects in highly n-type InN are probed using positron annihilation spectroscopy. Results are compared to Hall effect measurements and calculated electron mobilities. Based on this, self-compensation in n-type InN is studied and the mic
Externí odkaz:
http://arxiv.org/abs/1204.3299
Publikováno v:
Appl. Phys. Lett. 101, 072102 (2012)
We present the studies of magnetic properties of 2 MeV 4He+-irradiated GaN grown by metal-organic chemical-vapor deposition. Particle irradiation allowed controllable introduction of Ga-vacancy in the samples. The magnetic moments with concentrations
Externí odkaz:
http://arxiv.org/abs/1203.1142
Publikováno v:
Phys. Rev. A 85, 052707 (2012)
The many-body system comprising a He nucleus, three electrons, and a positron has been studied using the exact diagonalization technique. The purpose has been to clarify to which extent the system can be considered as a distinguishable positronium (P
Externí odkaz:
http://arxiv.org/abs/1202.6477
Novel solar cell materials consisting of Si nanoparticles embedded in SiO2 layers have been studied using positron annihilation spectroscopy in Doppler broadening mode, and photoluminescence. Two positron-trapping interface states are observed after
Externí odkaz:
http://arxiv.org/abs/1106.1753