Autor: Richter, O. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Low-Temperature Properties of the Quantum Heisenberg Antiferromagnet on Some One-Dimensional Lattices Containing Equilateral Triangles
Autorzy:: Maksymenko, M.
Derzhko, O.
Richter, J.
Powiązania:: https://bibliotekanauki.pl/articles/1505103.pdf
Data publikacji:: 2011-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.10.Jm
75.40.Gb
Opis:: We consider the quantum Heisenberg antiferromagnet in a magnetic field on two one-dimensional lattices containing equilateral triangles (a chain of corner-sharing double tetrahedra and a frustrated three-leg ladder) which support localized-magnon states. By mapping of the localized-magnon degrees of freedom on a classical lattice gas we obtain high-field thermodynamic quantities of the models at low temperatures.
Źródło:: Acta Physica Polonica A; 2011, 119, 6; 860-862
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Magnetic Properties of the Hubbard Model on Kagome Stripes
Autorzy:: Derzhko, O.
Maksymenko, M.
Richter, J.
Honecker, A.
Moessner, R.
Powiązania:: https://bibliotekanauki.pl/articles/1506953.pdf
Data publikacji:: 2010-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.10.-w
Opis:: We consider the one-orbital N-site repulsive Hubbard model on two kagome like chains, both of which yield a completely dispersionless (flat) one-electron band. Using exact many-electron ground states in the subspaces with n ≤ $n_\text{max}$ ($n_\text{max}$ ∝ N) electrons, we calculate the square of the total spin in the ground state to discuss magnetic properties of the models. We have found that although for n < n_{max} the ground states contain fully polarized states, there is no finite region of electron densities n/$\mathcal{N}$ < 1 ($\mathcal{N}$ = N/3 or $\mathcal {N}$ = N/5) where ground-state ferromagnetism survives for $\mathcal {N}$ → ∞.
Źródło:: Acta Physica Polonica A; 2010, 118, 5; 736-737
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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