Wszystkie pola: Lusakowski, J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Physics of THz Field-Effect Transistors
Autorzy:: Łusakowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/1505463.pdf
Data publikacji:: 2011-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.20.Mf
52.75.-d
Opis:: Field-effect transistors are nowadays considered as possible elements of THz detection and emission systems. Their THz performance is governed by excitations of two-dimensional plasma in the transistor channel. The paper discusses peculiarities of the photon-plasmon coupling mechanism in field-effect transistors and puts it in the perspective of classical investigation of plasma excitations in two-dimensional systems.
Źródło:: Acta Physica Polonica A; 2011, 119, 2; 114-116
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Resonant Plasmon Response of a Periodically Modulated Two-Dimensional Electron Gas
Autorzy:: Sznajder, P.
Piętka, B.
Szczytko, J.
Łusakowski, J.
Bardyszewski, W.
Powiązania:: https://bibliotekanauki.pl/articles/1409611.pdf
Data publikacji:: 2012-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 52.25.Mq
52.40.Db
73.20.-r
71.10.Ca
73.20.Mf
Opis:: We report the theoretical study of the optical response of a periodically modulated two-dimensional electron gas. The density of states is calculated within the first order of the perturbation theory and the effects of the short-range disorder are explained and discussed. We demonstrate that the magnetic field values corresponding to the characteristic narrowing of the density of states width are given by the zeros of the subsequent Laguerre polynomials. The observed increase of the density of states at the edges are interpreted as van Hove singularities. The broadening effects are shown to modify and smear out the observed effects with increasing temperature above 2 K. The plasmon dispersion relation is discussed in terms of the random phase approximation. Small changes in plasmon dispersion relation related to the periodic modulation were predicted.
Źródło:: Acta Physica Polonica A; 2012, 122, 6; 1090-1092
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: High Magnetic Field Effects on Plasma Wave THz Detection in Field-Effect Transistors
Autorzy:: Boubanga-Tombet, S.
Nogajewski, K.
Teppe, F.
Knap, W.
Karpierz, K.
Łusakowski, J.
Grynberg, M.
Dyakonov, M.
Powiązania:: https://bibliotekanauki.pl/articles/1791357.pdf
Data publikacji:: 2009-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 07.57.Kp
84.40.x
85.30.Tv
85.35.p
73.20.Mf
Opis:: Experiments on terahertz radiation detection with InGaAs/InAlAs field-effect transistor in quantizing magnetic field are reported. We observed oscillations of the photovoltaic signal analogous to the Shubnikov-de Haas oscillations, as well as their strong enhancement at the cyclotron resonance conditions. The results are described quantitatively within the frame of a theory which takes into account a new source of nonlinearity related to the Landau quantization of the conduction band.
Źródło:: Acta Physica Polonica A; 2009, 116, 5; 939-940
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Magnetoplasmons in a High Electron Mobility GaAs/AlGaAs Heterostructure
Autorzy:: Białek, M.
Karpierz, K.
Piętka, B.
Grynberg, M.
Łusakowski, J.
Czapkiewicz, M.
Fronc, K.
Wróbel, J.
Umansky, V.
Powiązania:: https://bibliotekanauki.pl/articles/1409613.pdf
Data publikacji:: 2012-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.20.Mf
Opis:: We have observed a multimode spectrum of magnetoplasmons in the Hall bars processed on a high electron mobility GaAs/AlGaAs heterostructure. We have found that the dispersion relation of these excitation follows square root dependence. Calculated wavelength of the fundamental magnetoplasmon mode fits to the width of sample.
Źródło:: Acta Physica Polonica A; 2012, 122, 6; 1096-1098
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Terahertz Response of a Point Contact Based on CdTe/CdMgTe Quantum Well in Magnetic Field
Autorzy:: Grigelionis, I.
Białek, M.
Grynberg, M.
Czapkiewicz, M.
Kolkovskiy, V.
Wiater, M.
Wojciechowski, T.
Wróbel, J.
Wojtowicz, T.
But, D.
Knap, W.
Łusakowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/1409358.pdf
Data publikacji:: 2012-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 85.30.Hi
73.20.Mf
Opis:: A photoresponse at THz frequencies of a quantum point contact fabricated on a CdTe/CdMgTe quantum well was studied at low temperatures as a function of magnetic field. The spectra show a structure which was interpreted as resulting from the cyclotron resonance and magnetoplasmon excitations. The wavelength of the fundamental magnetoplasmon mode was found to be about 2 μm which coincides with one of dimensions of the point contact. We also discuss the possibility of coupling of magnetoplasmon modes to shallow impurity transitions in the quantum well.
Źródło:: Acta Physica Polonica A; 2012, 122, 6; 1069-1072
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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