Zobrazeno 1 - 10
of 633
pro vyhledávání: '"Majewski, J. A."'
Autor:
Pattie Jr, R. W., Adamek, E., Brenner, T., Brandt, A., Broussard, L. J., Callahan, N. B., Clayton, S. M., Cude-Woods, C., Currie, S. A., Geltonbort, P., Ito, T., Lauer, T., Liu, C. Y., Majewski, J., Makela, M., Masuda, Y., Morris, C. L., Ramsey, J. C., Salvat, D., Saunders, A., Schroffenegger, J., Tang, Z., Wei, W., Wang, Z., Watkins, E., Young, A. R., Zeck, B. A.
We report on the evaluation of commercial electroless nickel phosphorus (NiP) coatings for ultracold neutron (UCN) transport and storage. The material potential of 50~$\mu$m thick NiP coatings on stainless steel and aluminum substrates was measured t
Externí odkaz:
http://arxiv.org/abs/1703.00508
Publikováno v:
FlatChem 7, 42 (2018)
The effect of external static charging on borophenes - 2D boron crystals - is investigated by using first principles calculations. The influence of the excess negative charge on the stability of the 2D structures is examined using a very simple analy
Externí odkaz:
http://arxiv.org/abs/1611.08934
Publikováno v:
Phys. Rev. B 95, 115311 (2017)
We study energetic, magnetic, and electronic properties of diluted substitutional Mn-pairs on the reconstructed $(001)$ GaAs surfaces. The studies are based on first-principles calculations in the framework of the density functional theory. We demons
Externí odkaz:
http://arxiv.org/abs/1603.09606
Autor:
Stefanowicz, W., Adhikari, R., Andrearczyk, T., Faina, B., Sawicki, M., Majewski, J. A., Dietl, T., Bonanni, A.
Publikováno v:
Physical Review B 89, 205201 (2014)
Millikelvin magnetotransport studies are carried out on heavily $n$-doped wurtzite GaN:Si films grown on semi-insulating GaN:Mn buffer layers by metal-organic vapor phase epitaxy. The dependency of the conductivity on magnetic field and temperature i
Externí odkaz:
http://arxiv.org/abs/1402.6843
Publikováno v:
European Physical Journal Web of Conferences 75, 01003 (2014)
Magnetic properties of Ga$_{1-x}$Mn$_x$N are studied theoretically by employing a tight binding approach to determine exchange integrals $J_{ij}$ characterizing the coupling between Mn spin pairs located at distances $R_{ij}$ up to the 16th cation co
Externí odkaz:
http://arxiv.org/abs/1308.4517
Autor:
Stefanowicz, S., Kunert, G., Simserides, C., Majewski, J. A., Stefanowicz, W., Kruse, C., Figge, S., Li, Tian, Jakiela, R., Trohidou, K. N., Bonanni, A., Hommel, D., Sawicki, M., Dietl, T.
Publikováno v:
Phys. Rev. B 88, 081201(R) (2013)
Molecular beam epitaxy has been employed to obtain Ga1-xMnxN films with x up to 10% and Curie temperatures T_C up to 13 K. The magnitudes of T_C and their dependence on x, T_C(x) ~ x^m, where m = 2.2 +/- 0.2 are quantitatively described by a tight bi
Externí odkaz:
http://arxiv.org/abs/1306.5141
Autor:
Moskal, P., Bednarski, T., Białas, P., Ciszewska, M., Czerwiński, E., Heczko, A., Kajetanowicz, M., Kapłon, Ł., Kochanowski, A., Konopka-Cupiał, G., Korcyl, G., Krzemień, W., Łojek, K., Majewski, J., Migdał, W., Molenda, M., Niedźwiecki, Sz., Pałka, M., Rudy, Z., Salabura, P., Silarski, M., Słomski, A., Smyrski, J., Zdebik, J., Zieliński, M.
Publikováno v:
Nuclear Medicine Review 2012, 15, Suppl. C: C81-C84
In this contribution we present a new concept of the large acceptance detector systems based on organic scintillators which may allow for simultaneous diagnostic of large fraction of the human body. Novelty of the concept lies in employing large bloc
Externí odkaz:
http://arxiv.org/abs/1305.5559
Autor:
Moskal, P., Bednarski, T., Białas, P., Ciszewska, M., Czerwiński, E., Heczko, A., Kajetanowicz, M., Kapłon, Ł., Kochanowski, A., Konopka-Cupiał, G., Korcyl, G., Krzemień, W., Łojek, K., Majewski, J., Migdał, W., Molenda, M., Niedźwiecki, Sz., Pałka, M., Rudy, Z., Salabura, P., Silarski, M., Słomski, A., Smyrski, J., Zdebik, J., Zieliński, M.
Publikováno v:
Nuclear Medicine Review 2012, 15, Suppl. C: C68-C69
We briefly present a design of a new PET scanner based on strips of polymer scintillators arranged in a barrel constituting a large acceptance detector. The solution proposed is based on the superior timing properties of the polymer scintillators. Th
Externí odkaz:
http://arxiv.org/abs/1305.5562
Autor:
Sawicki, M., Devillers, T., Gałȩski, S., Simserides, C., Dobkowska, S., Faina, B., Grois, A., Navarro-Quezada, A., Trohidou, K. N., Majewski, J. A., Dietl, T., Bonanni, A.
Publikováno v:
Phys. Rev. B 85, 205204 (2012)
By employing highly sensitive millikelvin SQUID magnetometry, the magnitude of the Curie temperature as a function of the Mn concentration x is determined for thoroughly characterized Ga1-xMnxN. The interpretation of the results in the frame of tight
Externí odkaz:
http://arxiv.org/abs/1202.6233
Publikováno v:
Phys. Rev. Lett 108, 237203 (2012)
It is demonstrated that the nearest neighbor Mn pair on the GaAs (001) surface has a lower energy for the [-110] direction comparing to the [110] case. According to the group theory and the Luttinger's method of invariants, this specific Mn distribut
Externí odkaz:
http://arxiv.org/abs/1202.3295