Autor: Belyaev, E - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Coherent and Sequential Tunneling in High Magnetic Field
Autorzy:: Belyaev, A. E.
Vitusevich, S. A.
Maude, D.
Portal, J. C.
Powiązania:: https://bibliotekanauki.pl/articles/1968012.pdf
Data publikacji:: 1997-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.40.Gk
85.30.Mn
Opis:: In the resonant tunneling diode incorporating a wide one-sided spacer layer, an oscillation picture has been studied in both polarities of the applied voltage in high magnetic field. The results lead to the conclusion that the interference between the electron waves running in the forward direction and the ones reflected at some potential step can occur in both the emitter and collector regions. The characteristic lengths corresponding to the path of the ballistic motion of electrons were estimated. An exchange enhancement of the electronic g-factor in two-dimensional systems was observed.
Źródło:: Acta Physica Polonica A; 1997, 92, 4; 704-708
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Effect of Magnetic Field on Fine Structure of Tunnel Current in Double-Barrier Resonant-Tunneling Devices
Autorzy:: Belyaev, A. E.
Vitusevich, S. A.
Glavin, B. A.
Mąkosa, A.
Dobrowolski, W.
Powiązania:: https://bibliotekanauki.pl/articles/1933716.pdf
Data publikacji:: 1995-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.40.Gk
85.30.Mn
Opis:: An effect of magnetic field on a fine oscillatory structure revealed in the resonant current flowing through double-barrier resonant-tunneling devices is examined. It is found that the observed variation of the fine structure in a magnetic field parallel to the current direction differs considerably from that appearing in tunnel current flowing through single-barrier structures. Experimental results are explained in terms of the quantum interference effect arising in structures having wide spacer layers.
Źródło:: Acta Physica Polonica A; 1995, 88, 4; 675-678
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Magnetically Controlled Interference of Ballistic Electrons Tunnelled throughout the Double-Barrier Resonator
Autorzy:: Figielski, T.
Wosiński, T.
Mąkosa, A.
Dobrowolski, W.
Vitusevich, S. A.
Belyaev, A. E.
Powiązania:: https://bibliotekanauki.pl/articles/1950748.pdf
Data publikacji:: 1996-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.40.Gk
85.30.Mn
Opis:: An effect of magnetic field normal to the tunnel current on the amplitude and phase of the fine oscillatory structure, discovered in the resonance current-voltage curve in double-barrier AlAs/GaAs heterostructures, has been examined. All the obtained results are consistently explained in terms of the interference of ballistic electrons, escaped from the quantum well, in the collector part of the structure.
Źródło:: Acta Physica Polonica A; 1996, 90, 4; 781-784
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Capacitance Spectroscopy of Single-Barrier GaAs/AlAs/GaAS Structures Containing InAs Quantum Dots
Autorzy:: Belyaev, A. E.
Eaves, L.
Main, P. C.
Polimeni, A.
Stoddart, S. T.
Henini, M.
Powiązania:: https://bibliotekanauki.pl/articles/1969042.pdf
Data publikacji:: 1998-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.40.Gk
85.30.Mn
Opis:: An electrostatic profile of single-barrier heterostructures with InAs quantum dots encased into barrier has been studied. The role of growth conditions and structure's design is investigated. The charging state and position of energy levels for InAs quantum dots embedded in AlAs matrix are discussed.
Źródło:: Acta Physica Polonica A; 1998, 94, 2; 245-249
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Role of Auger-Type Energy Transfer Processes in Quenching of Anti-Stokes Emission in Chromium and Iron Doped ZnSe: ODMR, Optical and Time-Resolved Study
Autorzy:: Ivanov, V. Yu.
Karczewski, G.
Godlewski, M.
Omel'chuk, A. R.
Belyaev, A. E.
Zhavoronkov, N. V.
Powiązania:: https://bibliotekanauki.pl/articles/2036871.pdf
Data publikacji:: 2003-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.55.Gs
78.55.Et
76.30.Fc
Opis:: Energy up-conversion in chromium and iron doped ZnSe results in the appearance of an anti-Stokes luminescence. The process is efficient in ZnSe:Cr, but not in ZnSe:Fe. We conclude that very efficient three-center Auger processes in ZnSe:Fe quench the anti-Stokes luminescence emission. For chromium doped samples influence of the Auger mechanism is weaker, which we explain by less efficient carrier retrapping by Cr ions. We further discuss possibility of efficient pumping of infrared Cr-related emissions via Cr photoionization transition.
Źródło:: Acta Physica Polonica A; 2003, 103, 6; 695-701
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Fine Structure of Resonant-Tunneling Peak in GaAs/AlAs Double-Barrier Heterostructure
Autorzy:: Vitusevich, S. A.
Figielski, T.
Mąkosa, A.
Wosiński, T.
Belyaev, A. E.
Konakova, R. V.
Kravchenko, L. N.
Powiązania:: https://bibliotekanauki.pl/articles/1872937.pdf
Data publikacji:: 1995-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.40.Gk
85.30.Mn
Opis:: For the first time we observed a fine oscillatory structure, with the period of 36 mV, of the resonant tunneling peak in the current-voltage characteristic of a double-barrier heterostructure. We attribute it to a sequential single-phonon emission of ballistic electrons which tunneled out from the quantum well through the collector barrier.
Źródło:: Acta Physica Polonica A; 1995, 87, 2; 377-380
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Tunnel Current Features Caused by Defect Assisted Process in Resonant-Tunnelling Structures
Autorzy:: Belyaev, A. E.
Vitusevich, S. A.
Glavin, B. A.
Konakova, R. V.
Dobrowolski, W.
Mąkosa, A.
Kravchenko, L. N.
Gornev, E. S.
Powiązania:: https://bibliotekanauki.pl/articles/1947897.pdf
Data publikacji:: 1996-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.40.Gk
85.30.Mn
Opis:: An extra channel of electron tunnelling through a double-barrier resonant-tunnelling GaAs/AlGaAs heterostructure caused by impurity assisted tunnelling was identified. We argue that it is due to DX centres associated with dopant donor atoms which diffused into the AlGaAs barrier layer.
Źródło:: Acta Physica Polonica A; 1996, 90, 4; 727-730
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Stochastic Carrier Dynamics in Semiconductor Superlattices
Autorzy:: Fromhold, T. M.
Bujkiewicz, S.
Patanè, A.
Stapleton, S. P.
Sherwood, D.
Fowler, D.
Cooper, J.
Eaves, L.
Belyaev, A. E.
Krokhin, A. A.
Neumann, A.
Wilkinson, P. B.
Sankeshwar, N. S.
Henini, M.
Sheard, F. W.
Powiązania:: https://bibliotekanauki.pl/articles/2044604.pdf
Data publikacji:: 2006-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.20.At
73.21.Cd
Opis:: We explore a new regime of hot carrier dynamics, in which electrons in a superlattice miniband exhibit a unique type of stochastic motion when a magnetic field is tilted at an angle θ to the superlattice axis. Remarkably, the dynamics of a miniband electron in a tilted magnetic field reduce to a one-dimensional simple harmonic oscillator, of angular frequency ω$\text{}_{C}$ cos θ, where ω$\text{}_{C}$ is the cyclotron frequency, driven by a time-dependent plane wave whose angular frequency equals the Bloch frequency ω$\text{}_{B}$. At bias voltages for which ω$\text{}_{B}$=nω$\text{}_{C}$ cos θ, where n is an integer, the electron orbits change from localised Bloch-like trajectories to unbounded stochastic orbits, which diffuse rapidly through intricate web patterns in phase space. To quantify how these webs affect electron transport, we make drift-diffusion calculations of the current-voltage curves including the effects of space-charge build up. When the magnetic field is tilted, our simulations reveal a large resonant peak, which originates from stochastic delocalisation of the electron orbits. We show that the corresponding quantised eigenstates change discontinuously from a highly localised character when the system is off resonance to a fully delocalised form when the resonance condition is satisfied.
Źródło:: Acta Physica Polonica A; 2006, 109, 1; 43-52
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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