Autor: Rojas, O. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Kinetically-Driven Frustration in Hybrid Spin Ladders
Autorzy:: Carvalho, R.
Pereira, M.
Lyra, M.
Rojas, O.
Strecka, J
Powiązania:: https://bibliotekanauki.pl/articles/1199484.pdf
Data publikacji:: 2014-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.10.Jm
75.10.Pq
05.70.Ce
Opis:: We introduce a spin ladder model incorporating localized and delocalized spins, which is exactly solvable using the decoration-iteration and transfer-matrix techniques. Quantum correlations between delocalized spins induce an antiferromagnetic coupling between the spin chains that competes with a direct ferromagnetic exchange coupling. A resulting kinetically-driven frustration is predominant in the regime of low temperatures and large hopping amplitudes. We provide the full ground-state phase diagram, as well as the frustration diagram on distinct coupling regimes.
Źródło:: Acta Physica Polonica A; 2014, 126, 1; 12-13
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Effect of the Canting of Local Anisotropy Axes on Ground-State Properties of a Ferrimagnetic Chain with Regularly Alternating Ising and Heisenberg Spins
Autorzy:: Torrico, J.
Lyra, M.
Rojas, O.
de Souza, S.
Strečka, J.
Powiązania:: https://bibliotekanauki.pl/articles/1032717.pdf
Data publikacji:: 2017-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.10.Pq
75.10.Kt
75.30.Kz
75.40.Cx
75.60.Ej
Opis:: The effect of the canting of local anisotropy axes on the ground-state phase diagram and magnetization of a ferrimagnetic chain with regularly alternating Ising and Heisenberg spins is exactly examined in an arbitrarily oriented magnetic field. It is shown that individual contributions of the Ising and Heisenberg spins to the total magnetization basically depend on the spatial orientation of the magnetic field and the canting angle between two different local anisotropy axes of the Ising spins.
Źródło:: Acta Physica Polonica A; 2017, 131, 4; 621-623
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: In vitro Trypanosoma cruzi Growth Inhibition by Extremely Low-frequency Electromagnetic Fields
Autorzy:: Heredia-Rojas, J. Antonio
Rodríguez-De la Fuente, Abraham O.
Gomez-Flores, Ricardo
Alvarez-Rodríguez, Merary
Molina-Garza, Zinnia J.
Beltcheva, M.
Heredia-Rodríguez, Omar
Galaviz-Silva, Lucio
Powiązania:: https://bibliotekanauki.pl/articles/52077175.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:: Trypanosoma cruzi
antiprotozoal activity
60-Hz sinusoidal magnetic fields
anti-trypanosome
Opis:: The influence of extremely low-frequency electromagnetic fields (ELF-EMFs) on microorganisms has been a subject of experimental investigations with promising results. In the present study, it was demonstrated that 2.0 mT 60Hz ELF-EMFs inhibited Trypanosoma cruzi epimastigotes growth. In addition, no synergistic or antagonistic parasite growth and viability effects were observed after cultures were co-exposed to magnetic fields and Nifurtimox, a well-known anti-trypanosome drug. Moreover, the current study represents the first report regarding direct magnetic fields effects on Trypanosomas.
Źródło:: Acta Protozoologica; 2019, 58, 2; 89-92
0065-1583
1689-0027
Pojawia się w:: Acta Protozoologica
Dostawca treści:: Biblioteka Nauki

Artykuł

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