Theory of magnetic field-induced metaelectric critical end point in BiMn$_2$O$_5$
| dc.creator | Jeon, Gun Sang | |
| dc.creator | Park, Jin-Hong | |
| dc.creator | Kim, Kee Hoon | |
| dc.creator | Han, Jung Hoon | |
| dc.date | 2008-10-13 | |
| dc.date.accessioned | 2026-07-07T12:57:59Z | |
| dc.date.available | 2026-07-07T12:57:59Z | |
| dc.description | A recent experiment on the multiferroic BiMn$_2$O$_5$ compound under a strong applied magnetic field revealed a rich phase diagram driven by the coupling of magnetic and charge (dipolar) degrees of freedom. Based on the exchange-striction mechanism, we propose here a theoretical model with the intent to capture the interplay of the spin and dipolar moments in the presence of a magnetic field in BiMn$_2$O$_5$. Experimentally observed behavior of the dielectric constants, magnetic susceptibility, and the polarization is, for the most part, reproduced by our model. The critical behavior observed near the polarization reversal $(P=0)$ point in the phase diagram is interpreted as arising from the proximity to the critical end point. | |
| dc.description | Theory; relevant experiment uploaded as arXiv:0810.1907 | |
| dc.identifier | https://arxiv.org/abs/0810.2332 | |
| dc.identifier | http://arxiv.org/abs/0810.2332 | |
| dc.identifier | Phys. Rev. B 79 104437 (2009) | |
| dc.identifier | doi:10.1103/PhysRevB.79.104437 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/225093 | |
| dc.subject | Materials Science | |
| dc.subject | Statistical Mechanics | |
| dc.title | Theory of magnetic field-induced metaelectric critical end point in BiMn$_2$O$_5$ | |
| dc.type | text |