Report
A cascade of magnetic field induced spin transitions in LaCoO3
| العنوان: | A cascade of magnetic field induced spin transitions in LaCoO3 |
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| المؤلفون: | Altarawneh, M. M., Chern, G. -W., Harrison, N., Batista, C. D., Uchida, A., Jaime, M., Rickel, D. G., Crooker, S. A., Mielke, C. H., Betts, J. B., Mitchell, J. F., Hoch, M. J. R. |
| المصدر: | Phys. Rev. Lett. 109, 037201 (2012) |
| سنة النشر: | 2012 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Materials Science |
| الوصف: | We present magnetization and magnetostriction studies of the insulating perovskite LaCoO3 in magnetic fields approaching 100 T. In marked contrast with expectations from single-ion models, the data reveal two distinct first-order spin transitions and well-defined magnetization plateaux. The magnetization at the higher plateau is only about half the saturation value expected for spin-1 Co3+ ions. These findings strongly suggest collective behavior induced by strong interactions between different electronic -- and therefore spin -- configurations of Co3+ ions. We propose a model of these interactions that predicts crystalline spin textures and a cascade of four magnetic phase transitions at high fields, of which the first two account for the experimental data. Comment: 5 pages + supplementary materials, 5 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.109.037201 |
| URL الوصول: | http://arxiv.org/abs/1206.2603 |
| رقم الانضمام: | edsarx.1206.2603 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.109.037201 |
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