Spectroscopic signatures and origin of hidden order in Ba2MgReO6
Clarifying the underlying mechanisms that govern ordering transitions in condensed matter systems is crucial for comprehending emergent properties and phenomena. While transitions are often classified as electronically driven or lattice-driven, we present a departure from this conventional picture in the case of the double perovskite Ba<sub>2</sub>MgReO<sub>6</sub>. Leveraging resonant and non-resonant elastic x-ray scattering techniques, we unveil the simultaneous ordering of structural distortions and charge quadrupoles at a critical temperature of T<sub>q</sub> ~ 33 K. Using a variety of complementary first-principles-based computational techniques, we demonstrate that, while electronic interactions drive the ordering at T<sub>q</sub>, it is ultimately the lattice distortions that dictate the specific ground state that emerges. Our findings highlight the crucial interplay between electronic and lattice degrees of freedom, providing a unified framework to understand and predict unconventional emergent phenomena in quantum materials.
Authors
- Ivica Živković (ORCID: https://orcid.org/0000-0003-0366-8199)
- Davor Tolj (ORCID: https://orcid.org/0000-0003-3806-1792)
- Claude Ederer (ORCID: https://orcid.org/0000-0002-2280-8022)
- Dario Fiore Mosca (ORCID: https://orcid.org/0000-0003-2496-0455)
- Sonia Francoual (ORCID: https://orcid.org/0000-0002-5788-595X)
- Daigorou Hirai (ORCID: https://orcid.org/0000-0003-2883-4376)
- Maximilian E. Merkel (ORCID: https://orcid.org/0000-0003-2589-9625)
- Leonid V. Pourovskii (ORCID: https://orcid.org/0000-0003-4003-3539)
- Jana Pásztorová (ORCID: https://orcid.org/0000-0002-4762-0384)
- Andrea Urru (ORCID: https://orcid.org/0000-0002-5602-3063)
- Nicola A. Spaldin (ORCID: https://orcid.org/0000-0003-0709-9499)
- Oleg V. Yazyev (ORCID: https://orcid.org/0000-0001-7281-3199)
- H. M. Rønnow (ORCID: https://orcid.org/0000-0002-8832-8865)
- Oleg Malanyuk
- Jian-Rui Soh (ORCID: https://orcid.org/0000-0003-2542-6086)
Institutions
- Agency for Science, Technology and Research (SG)
- Centre National de la Recherche Scientifique (FR)
- École Polytechnique (FR)
- Collège de France (FR)
- Université Paris Sciences et Lettres (FR)
- Deutsches Elektronen-Synchrotron DESY (DE)
- ETH Zurich (CH)
- Institute of Materials Research and Engineering (SG)
- École Polytechnique Fédérale de Lausanne (CH)
- Nagoya University (JP)
Publication Details
- Journal
- Nature Communications
- Published
- 2024-11-29
- DOI
- https://doi.org/10.1038/s41467-024-53893-z
- Citations
- 9
- Primary Topic
- Advanced Condensed Matter Physics
- Type
- article
- Field-Weighted Citation Impact
- 2.80
Funders
- École Polytechnique Fédérale de Lausanne
- Eidgenössische Technische Hochschule Zürich
- Centro Svizzero di Calcolo Scientifico
- National Supercomputing Centre Singapore
- Deutsches Elektronen-Synchrotron