Selective Interface Control of Order Parameters in Complex Oxides
| Autor: | Meyers, D., Liu, Jian, Freeland, J. W., Middey, S., Kareev, M., Zuo, J. M., Chuang, Yi-De, Kim, Jong Woo, Ryan, P. J., Chakhalian, J. |
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| Rok vydání: | 2015 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/srep27934 |
| Popis: | In complex materials observed electronic phases and transitions between them often involves coupling between many degrees of freedom whose entanglement convolutes understanding of the instigating mechanism. Metal-insulator transitions are one such problem where coupling to the structural, orbital, charge, and magnetic order parameters frequently obscures the underlying physics. Here, we demonstrate a way to unravel this conundrum by heterostructuring a prototypical multi-ordered complex oxide NdNiO3 in ultra thin geometry, which preserves the metal-to-insulator transition and bulk-like magnetic order parameter, but entirely suppresses the symmetry lowering and charge order parameter. These findings illustrate the utility of heterointerfaces as a powerful method for removing competing order parameters to gain greater insight into the nature of the transition, here revealing that the magnetic order generates the transition independently, leading to a purely electronic Mott metal-insulator transition. Comment: 16 pages, 4 Figures |
| Databáze: | arXiv |
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