Autor: Majchrowski, K. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Anisotropy of the Conductivity in the Asymmetric Quantum Wells
Autorzy:: Majchrowski, K.
Paśko, W.
Powiązania:: https://bibliotekanauki.pl/articles/1811959.pdf
Data publikacji:: 2008-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 72.40.+w
73.21.Fg
Opis:: Gorbatsevich et al. and Kibis suggested that a number of interesting galvano-magnetic effects could be observed in quantum structures where the symmetry with respect to the space coordinates inversion and time-reversal are broken simultaneously. In the paper of Kibis for example, the infinite triangular quantum well in an external magnetic field was considered and the anisotropy of electron momentum transfer due to interaction with phonons was predicted. The role of magnetic field was to provide the time-invariance breaking. In this work we considered the effect of anisotropy of electron momentum transfer due to interaction with polarized light using more realistic model of finite triangular quantum well. This anisotropy leads to the anisotropy of the real part of photoconductivity and as it follows from our calculations, the effect though not very great, could be measurable for the attainable values of magnetic field B≈5 T and the widths of quantum well.
Źródło:: Acta Physica Polonica A; 2008, 114, 5; 1241-1246
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Photogalvanic Effect in Semiparabolic Quantum Well
Autorzy:: Majchrowski, K.
Paśko, W.
Tralle, I.
Powiązania:: https://bibliotekanauki.pl/articles/1791300.pdf
Data publikacji:: 2009-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 72.40.+w
73.21.Fg
Opis:: In this work we studied the charge carriers behaviour in quantum structures where the symmetry with respect to space coordinates and time-reversal symmetry are broken simultaneously. As the model of such structures we considered finite semiparabolic quantum well (we considered earlier the case of triangular QW) placed in external magnetic field. We have shown by numerical analysis that the energy spectra of charge carriers in such structures are anisotropic with respect to in-plane (transverse) motion $ϵ_{n}( + k_{x})$ ≠ $ϵ_{n}(-k_{x})$. This leads to the anisotropy of charge carriers in-plane momentum transfer which, in its turn leads to the anisotropy of photoconductivity $σ( + k_{x})$ ≠ $σ(-k_{x})$ and as it follows from our calculations, the effect though not very great, could be measurable for the magnetic field of about few T.
Źródło:: Acta Physica Polonica A; 2009, 116, 5; 854-856
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Qubits in Double Quantum Well Structure
Autorzy:: Jakubczyk, P.
Majchrowski, K.
Tralle, I.
Powiązania:: https://bibliotekanauki.pl/articles/1032436.pdf
Data publikacji:: 2017-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 72.25.Mk
74.55.+v
03.67.Bg
Opis:: We propose a new approach to producing the qubits in electron ballistic transport in low-dimensional structures such as double quantum wells or double quantum wires. Next, we examine the possibility to produce quantum entanglement in the framework of the Jaynes-Cummings model and shown that at least in principle, the entanglement can be achieved due to series of "revivals" and "collapses" in the population inversion due to the interaction of a quantized single-mode EM-field with a two-level system.
Źródło:: Acta Physica Polonica A; 2017, 132, 1; 115-117
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Crystalline Structure of Potassium Holmium Double Tungstate
Autorzy:: Borowiec, M.
Dyakonov, V.
Woźniak, K.
Dobrzycki, Ł.
Majchrowski, A.
Michalski, E.
Zubov, E.
Khatsko, E.
Zayarnyuk, T.
Szewczyk, A.
Gutowska, M.
Rykova, A.
Barański, M.
Domukhovski, V.
Shtyrkhunova, V.
Iwanowski, P.
Żmija, J.
Szymczak, H.
Powiązania:: https://bibliotekanauki.pl/articles/1505085.pdf
Data publikacji:: 2011-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.66.Fn
Opis:: The potassium holmium double tungstate was prepared by using top seeded solution growth technique. Structural investigations have been performed at room temperature. The $KHo(WO_4)_2$ single crystal belongs to the monoclinic space group C2/c with the unit-cell parameters: a = 10.624(2) Å, b = 10.352(2) Å, c = 7.5434(15) Å, β = $130.78(3)^{o}$, and Z = 4. The atomic coordinates, isotropic and anisotropic displacement parameters and interionic distances for the studied structure were determined.
Źródło:: Acta Physica Polonica A; 2011, 119, 6; 835-837
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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