Lifshitz transition driven by spin fluctuations and spin-orbit renormalization in NaOsO3
- Author(s)
- Bongjae Kim, Peitao Liu, Zeynep Ergönenc, Alessandro Toschi, Sergii Khmelevskyi, Cesare Franchini
- Abstract
In systems where electrons form both dispersive bands and small local spins, we show that changes in the spin configuration can tune the bands through a Lifshitz transition, resulting in a continuous metal-insulator transition associated with a progressive change in the Fermi surface topology. In contrast to the Mott-Hubbard and Slater pictures, this spin-driven Lifshitz transition appears in systems with a small electron-electron correlation and large hybridization. We show that this situation is realized in 5d distorted perovskites with half-filled t2g bands such as NaOsO3, where the strong p−d hybridization reduces the local moment, and spin-orbit coupling causes a large renormalization of the electronic mobility. This weakens the role of electronic correlations and drives the system towards an itinerant magnetic regime which enables spin fluctuations.
- Organisation(s)
- Computational Materials Physics
- External organisation(s)
- Technische Universität Wien
- Journal
- Physical Review B
- Volume
- 94
- No. of pages
- 6
- ISSN
- 1098-0121
- DOI
- https://doi.org/10.1103/PhysRevB.94.241113
- Publication date
- 2016
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103025 Quantum mechanics, 103036 Theoretical physics, 103015 Condensed matter, 103009 Solid state physics
- Keywords
- ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials, Condensed Matter Physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/lifshitz-transition-driven-by-spin-fluctuations-and-spinorbit-renormalization-in-naoso3(27499389-7242-4d88-87fb-b544d7d510c2).html