Autor: Maśka, M. M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Correlations in Hexagonal Lattice Systems - Application to Carbon Nanotubes
Autorzy:: Czajka, K.
Maśka, M. M.
Powiązania:: https://bibliotekanauki.pl/articles/2041458.pdf
Data publikacji:: 2004-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.22.-f
71.15.Dx
Opis:: We present exact diagonalization studies of two-dimensional electron gas on hexagonal lattice. Using Lanczös method we analyze the influence of the Coulomb correlations on the density of states and spectral functions. Choosing appropriate boundary conditions we simulate the geometry of a single wall carbon nanotube. In particular, integration over the boundary condition in one direction and summation in the other one allows us to perform cluster calculations for a tube-like system with a finite diameter and infinite length.
Źródło:: Acta Physica Polonica A; 2004, 106, 5; 703-707
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Electrical Control of Spin Relaxation Time in Complex Quantum Nanostructures
Autorzy:: Kurpas, M.
Kędzierska, B.
Janus-Zygmunt, I.
Maśka, M.
Zipper, E.
Powiązania:: https://bibliotekanauki.pl/articles/1374330.pdf
Data publikacji:: 2014-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 72.25.Rb
73.22.-f
75.70.Tj
85.35.Be
Opis:: Spin related phenomena in quantum nanostructures have attracted recently much interest due to fast growing field of spintronics. In particular complex nanostructures are important as they provide a versatile system to manipulate spin and the electronic states. Such systems can be used as spin memory devices or scalable quantum bits. We investigate the spin relaxation for an electron in a complex structure composed of a quantum dot surrounded by a quantum ring. We shown that modifications of the confinement potential result in the substantial increase of the spin relaxation time.
Źródło:: Acta Physica Polonica A; 2014, 126, 4a; A-20-A-24
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Application of the Dot-Ring Nanostructure to Control Electrical Transport in the Coulomb Blockade Regime
Autorzy:: Janus-Zygmunt, I.
Kędzierska, B.
Gorczyca-Goraj, A.
Kurpas, M.
Maśka, M.
Zipper, E.
Powiązania:: https://bibliotekanauki.pl/articles/1376091.pdf
Data publikacji:: 2014-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.23.Hk
73.21.La
73.22.-f
Opis:: Transport properties of a two-dimensional nanostructure composed of a quantum dot surrounded by a quantum ring (dot-ring nanostructure), are discussed. This complex system is a highly controllable object. Conduction through dot-ring nanostructure depends crucially on the coupling strength of its states to the electrodes, which is related to the spatial distribution of the electron's wave functions in dot-ring nanostructure. This distribution can be strongly modified, e.g., by the electrical gating so that the ground and excited states move between the inner dot and the outer ring. In this paper we show that this property can be used to control single-electron DC current through dot-ring nanostructure in the Coulomb blockade regime so that it can be used as a single electron transistor.
Źródło:: Acta Physica Polonica A; 2014, 126, 5; 1171-1173
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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