Unveiling new magnetic phases of undoped and doped manganites |
| |
Authors: | Hotta Takashi Moraghebi Mohammad Feiguin Adrian Moreo Adriana Yunoki Seiji Dagotto Elbio |
| |
Institution: | Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan. |
| |
Abstract: | Novel ground-state spin structures in undoped and lightly doped manganites are investigated based on the orbital-degenerate double-exchange model, via mean-field and numerical techniques. In undoped manganites, a new antiferromagnetic (AFM) state, called the E-type phase, is found adjacent in parameter space to the A-type AFM phase. Its structure is in agreement with recent experimental results. This insulating E-AFM state is also competing with a ferromagnetic metallic phase as well. For doped layered manganites, the phase diagram includes another new AFM phase of the CxE1-x type. Experimental signatures of the new phases are discussed. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|