Complete phase diagram of rare-earth nickelates from first-principles
Complex oxides: Simulating the complete phase diagram of nickelates A new theoretical approach provides a complete phase diagram of rare-earth nickelates, reproducing the key features seen in experiments. Transition metal oxides with a pervoskite crystal structure exhibit a broad range of behaviours...
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| Autores principales: | , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
Nature Portfolio
2017
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/3b1e0b0e7a4e41e7877246686f8baa92 |
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| Sumario: | Complex oxides: Simulating the complete phase diagram of nickelates A new theoretical approach provides a complete phase diagram of rare-earth nickelates, reproducing the key features seen in experiments. Transition metal oxides with a pervoskite crystal structure exhibit a broad range of behaviours due to a complex the interplay between lattice, electronic and magnetic degrees of freedom. Rare-earth nickelates are a particularly interesting class of perovskite oxide that undergo a highly tunable (and potentially exploitable) metal-insulator transition. Theoretically describing the insulating phase of nickelates, however, is far from trivial and two seemingly distinct descriptions have emerged. A team of researchers led by Manuel Bibes at Unité Mixte de Physique CNRS/Thales use first-principles simulations to somewhat reconcile these conflicting visions, fully describing the electronic and magnetic ground state of nickelates, as well as hinting at strategies for tuning these fascinating materials. |
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