Autor: Stagraczyński, S. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effect of Rashba Spin-Orbit Coupling on the Spin Polarization of Holes in Two-Dimensional GaMnAs Magnetic Semiconductors
Autorzy:: Stagraczyński, S.
Dugaev, V.
Berakdar, J.
Powiązania:: https://bibliotekanauki.pl/articles/1032428.pdf
Data publikacji:: 2017-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: Magnetization
Rashba spin-orbit coupling
Opis:: We consider the effect of the Rashba spin-orbital coupling in two-dimensional GaAs semiconductor heavily doped with Mn, on the spin polarization of holes. Due to the strong internal spin-orbit interaction in GaAs, the spin of a hole is not a good quantum number but the hole in some energy state has a certain mean value of spin, which can be strongly affected by the Rashba spin-orbital interaction related to the substrate for 2D material.
Źródło:: Acta Physica Polonica A; 2017, 132, 1; 189-192
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Strain Designed Magnetic Properties of III-V Magnetic Semiconductors
Autorzy:: Stagraczyński, S.
Jasiukiewicz, C.
Dugaev, V.
Berakdar, J.
Powiązania:: https://bibliotekanauki.pl/articles/1402582.pdf
Data publikacji:: 2015-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.50.Pp
75.30.Gw
75.80.+q
Opis:: We present the theoretical analysis of a possibility of the magnetic anisotropy control using various components of the strain tensor in III-V magnetic semiconductor. We used the Kane model of the valence bands for the numerical simulations of the influence of strain on the Mn doped GaAs valence band structure. Calculating numerically the energy structure of deformed GaMnAs magnetic semiconductor, we also found the total energy of electron system as a function of orientation of the average magnetization vector. Our calculations show how the direction of the magnetization easy axis can be effectively rotated by using different types of deformation.
Źródło:: Acta Physica Polonica A; 2015, 128, 2; 219-221
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Influence of Acoustic Phonons on the Magnetic Anisotropy in GaMnAs Magnetic Semiconductors
Autorzy:: Jasiukiewicz, C.
Stagraczyński, S.
Lehmann, D.
Dugaev, V.
Berakdar, J.
Powiązania:: https://bibliotekanauki.pl/articles/1402566.pdf
Data publikacji:: 2015-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.50.Pp
75.30.Gw
77.80.Fm
Opis:: We present a theoretical description of the influence of incoherent acoustic phonons on the magnetic anisotropy of magnetic semiconductors. Our theory is based on the six-band Kane model of the electron energy spectrum describing the valence band with k· p Hamiltonian including the hole-phonon interaction term. We include the effect of incoherent phonons through the hole self-energy in the six-band model, and assume a strong laser-pulse-induced flux of non-equilibrium acoustic phonons. The results of numerical calculations of magnetic anisotropy performed for (GaMn)(AsP) magnetic alloy semiconductors demonstrate the essential role of incoherent phonons.
Źródło:: Acta Physica Polonica A; 2015, 128, 2; 179-181
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Galois Properties of the Eigenproblem of the Hexagonal Magnetic Heisenberg Ring
Autorzy:: Banaszak, G.
Barańczuk, S.
Lulek, T.
Milewski, J.
Stagraczyński, R.
Powiązania:: https://bibliotekanauki.pl/articles/1427165.pdf
Data publikacji:: 2012-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 03.65.Aa
73.21.-b
85.35.Be
89.70.Eg
Opis:: We analyse the number field-theoretic properties of solutions of the eigenproblem of the Heisenberg Hamiltonian for the magnetic hexagon with the single-node spin 1/2 and isotropic exchange interactions. It follows that eigenenergies and eigenstates are expressible within an extension of the prime field ℚ of rationals of degree $2^3$ and $2^4$, respectively. In quantum information setting, each real extension of rank 2 represents an arithmetic qubit. We demonstrate in detail some actions of the Galois group on the eigenproblem.
Źródło:: Acta Physica Polonica A; 2012, 121, 5-6; 1111-1114
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: The influence of sonication and silver nanoparticles doped on viscoelastic structure of agarose gel
Autorzy:: Żyła, G.
Stompor, M.
Kopańska, M.
Stagraczyński, R.
Fal, J.
Traciak, J.
Trybus, M.
Wolski, S.
Zawlik, I.
Cebulski, J.
Konefał-Janocha, M.
Cholewa, M.
Powiązania:: https://bibliotekanauki.pl/articles/1055020.pdf
Data publikacji:: 2017-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 83.10.Tv
83.60.Df
83.80.Hj
62.20.F-
66.20.Ej
Opis:: The paper presents result of experimental measurements of viscoelastic properties of agarose gel after sonication and with silver nanoparticles doped. Researches were conducted using a HAAKE MARS 2 rheometer (Thermo Electron Corporation, Karlsruhe, Germany), with serrated plate-plate measuring geometry. Viscoelastic properties of samples were measured with oscillation tests at constant deformation rate 0.1%, and frequency 1 Hz in the temperature range from 278 to 348 K. It was presented that using the sonication before solidification of gel results in increases of the storage modulus and complex viscosity of the solidified gel. It was also presented that when silver nanoparticles are doped into agarose gel, storage modulus and complex viscosity start to decrease at lower temperature.
Źródło:: Acta Physica Polonica A; 2017, 132, 1; 152-154
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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