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:: Next-Nearest-Neighbor Hopping in the Falicov-Kimball Model
Autorzy:: Czajka, K.
Maśka, M. M.
Powiązania:: https://bibliotekanauki.pl/articles/2046727.pdf
Data publikacji:: 2006-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.10.-w
71.10.Fd
Opis:: Results of Monte Carlo simulations for the spinless Falicov-Kimball model with the next-nearest-neighbor hopping are presented. We find the critical value of the next-nearest-neighbor hopping integral, below which the low temperature configuration of the localized particles is the same as in the presence of only the nearest-neighbor hopping. Beyond this critical value the localized particles form horizontal or vertical stripes.
Źródło:: Acta Physica Polonica A; 2006, 109, 4-5; 465-469
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Charge Density Waves in Small Metallic and Superconducting Rings
Autorzy:: Maśka, M. M.
Czajka, K.
Mierzejewski, M.
Śledź, Ż.
Powiązania:: https://bibliotekanauki.pl/articles/2046736.pdf
Data publikacji:: 2006-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.23.Ra
74.78.-w
Opis:: Experimental results concerning persistent currents in small rings threaded by a magnetic flux do not agree with theoretical predictions, especially for experiments performed in diffusive regime. This suggests important role of disorder in these experiments. In this paper we demonstrate how impurities present in ring modify the persistent current by generating or enhancing charge density waves. The electronic correlations are taken into account for both repulsive as well as attractive electron-electron interaction. The calculations are carried out for one-dimensional rings consisting of up to 12 lattice sites using Lanczös exact diagonalization approach, and for finite-width much larger rings using the Bogolyubov-de Gennes equations.
Źródło:: Acta Physica Polonica A; 2006, 109, 4-5; 519-525
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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