| Autor: |
Kasama, T., Muraoka, Y., Iwashita, T., Idogaki, T. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2006, Vol. 850 Issue 1, p1079-1080, 2p, 1 Diagram, 3 Graphs |
| Abstrakt: |
We study a new axial next-nearest-neighbor Ising (ANNNI) model in which both the strength of intralayer and interlayer interactions alternate along the c-axis, respectively. The results of a site-dependent mean-field approximation show that the alternation of these interactions causes the partially disordered phase (PDP) and a crossing behavior between two PDPs of ↑ ° ↓ ° and ° ↑ ° ↓ where ↑ (or ↓) means a layer magnetized along ↑ (or ↓) direction and ° means a paramagnetic layer. In an extremely low temperature region around the multi-phase point, we found the reentrant phase transition producing the successive phase transitions ↑↑↑↑⇒↑↑↑↓↓↓⇒↑↑↑↑ with increasing temperature. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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