Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-10-17
J. Phys.: Condens. Matter 19 (2007) 096205.
Physics
Condensed Matter
Strongly Correlated Electrons
10 pages, 7 figures
Scientific paper
We observe the interesting magnetization and resistivity results in the orthorhombically distorted self doped manganite, La_{0.87}MnO_x. A significant irreversibility between zero-field-cooled and field-cooled resistivities as well as magnetization data is clearly observed up to a temperature which is well above the both paramagnetic to ferromagnetic (T_c) and metal to insulator transition (T_{MI}) temperatures. In the ferromagnetically ordered and metallic states the magnetotransport results suggest the influence of domain wall dynamics. Interesting scenario of memory effects through the domain wall dynamics is strikingly observed in the relaxation of resistivity in a limited temperature region. The characteristic features of magnetotransport behaviour are suggested duo to the co-existence of structurally driven inhomogeneous phase separation and domain wall dynamics.
De Kaushik
Giri Santanab
Majumdar Satya
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