# Lattice softening and diffusive dynamics in the polar metal LiReO 3 https://mdr.nims.go.jp/datasets/31d91e09-30e2-4ee1-b34e-5c3ecb0155b2 ## File - [sciadv.adt3886.pdf](https://mdr.nims.go.jp/filesets/87e56d33-5957-4c56-8219-61f1222a3369/download) ([Detail](https://mdr.nims.go.jp/filesets/87e56d33-5957-4c56-8219-61f1222a3369.md)) ## Id 31d91e09-30e2-4ee1-b34e-5c3ecb0155b2 ## Local identifier ## Visibility open_to_public ## State published ## Created at 2026-04-07T01:26:05.546230Z ## Updated at 2026-04-07T01:28:05.605647Z ## Published at 2026-04-07T07:24:27.678714Z ## Doi ## First published url https://doi.org/10.1126/sciadv.adt3886 ## Date published 2026-04-03 ## Recorded date published 2026-4-3 ## Resource type journal_article ## Manuscript type vor ## Collection ## Title - title: |- Lattice softening and diffusive dynamics in the polar metal LiReO 3 title_type: original lang: en ## Description - description: Polar metals, characterized by the nontrivial coexistence of metallicity and polar structural order, define an emerging frontier in quantum materials research. Yet, the interplay between their structural phase transitions and fluctuation dynamics remains poorly understood. Here, we reveal distinct diffusive dynamics in metallic LiReO3 associated with its polar-to-nonpolar (P-NP) transition. Unlike isostructural LiOsO3 and related systems, LiReO3 exhibits pronounced phase fluctuations both above and below Ts. Thermoelectric, Raman, and ultrasound measurements demonstrate a probe-dependent thermal hysteresis, while ultrasound data further show lattice softening and persistent resonant absorption at low temperatures across a broad timescale (1-100 μs). These observations indicate a multiscale spatiotemporal dynamics governed by a shallow anharmonic potential stabilized by itinerant electrons, as supported by finite temperature first-principles calculations. By mapping the fluctuation landscape shaped by itinerant electrons, this work offers a new perspective for exploiting fluctuation-driven phenomena in polar metals. description_type: abstract lang: und ## Creator - name: Kantaro Murayama role: author orcid: https://orcid.org/0000-0003-0993-0215 - name: Ryota Masuki role: author orcid: https://orcid.org/0000-0002-5407-844X - name: Cédric Tassel role: author orcid: https://orcid.org/0000-0002-8867-4813 - name: Hideaki Sakai role: author orcid: https://orcid.org/0000-0001-9839-1377 - name: Tatsuya Yanagisawa role: author orcid: https://orcid.org/0000-0003-4558-8824 - name: Keito Yoshida role: author - name: Hiroshi Oike role: author orcid: https://orcid.org/0000-0001-6866-7774 - name: Suguru Yoshida role: author orcid: https://orcid.org/0000-0002-1016-5031 - name: Xiangyu Gu role: author - name: Kohdai Ishida role: author orcid: https://orcid.org/0000-0002-9824-6388 - name: Morito Namba role: author orcid: https://orcid.org/0000-0002-0118-9832 - name: Ksenia Denisova role: author orcid: https://orcid.org/0000-0001-8019-2126 - name: Valérie Dupray role: author - name: Simon Clevers role: author orcid: https://orcid.org/0000-0002-1377-1141 - name: Olivier Mentré role: author orcid: https://orcid.org/0000-0002-1822-6003 - name: Takuya Nomoto role: author orcid: https://orcid.org/0000-0002-4333-6773 - name: Terumasa Tadano role: author orcid: https://orcid.org/0000-0002-8132-2161 - name: Craig M. Brown role: author orcid: https://orcid.org/0000-0002-9637-9355 - name: Peter Lemmens role: author orcid: https://orcid.org/0000-0002-0894-3412 - name: Ryotaro Arita role: author orcid: https://orcid.org/0000-0001-5725-072X - name: Hiroshi Takatsu role: author orcid: https://orcid.org/0000-0001-5792-0113 - name: Hiroshi Kageyama role: author orcid: https://orcid.org/0000-0002-3911-9864 ## Contact agent ## Publisher organization: American Association for the Advancement of Science (AAAS) ## Managing organization ## Keyword - subject: Polar metal schema: not_defined - subject: lattice dynamics schema: not_defined - subject: phase transition schema: not_defined ## Rights - identifier: https://creativecommons.org/licenses/by/4.0/ ## Other identifier(s) ## Data origin ## Embargo ## Journal - title: Science Advances issn: '23752548' volume: '12' issue: '14' article_number: eadt3886 ## Conference ## Related item ## Funding - funder_name: Nippon Sheet Glass Foundation for Materials Science and Engineering - identifier: '390837967' funder_name: Deutsche Forschungsgemeinschaft - identifier: JP22H04914 funder_name: Japan Society for the Promotion of Science - identifier: JP16H06439 funder_name: Japan Society for the Promotion of Science - identifier: JP21H05561 funder_name: Japan Society for the Promotion of Science - identifier: JP22H05143 funder_name: Japan Society for the Promotion of Science - identifier: JP23H04868 funder_name: Japan Society for the Promotion of Science - identifier: JP22H01777 funder_name: Japan Society for the Promotion of Science - identifier: JSPSCCA20200004 funder_name: Japan Society for the Promotion of Science - identifier: JP23KJ1395 funder_name: Japan Society for the Promotion of Science - identifier: JP22H04914 funder_name: Japan Society for the Promotion of Science - identifier: JPMJCR1421 funder_name: Japan Science and Technology Agency - identifier: JPMJAP2408 funder_name: Japan Science and Technology Agency - identifier: JPMJCR2543 funder_name: Japan Science and Technology Agency - identifier: JP24K01583 funder_name: Japan Society for the Promotion of Science - identifier: JP22H04914 funder_name: Japan Society for the Promotion of Science - identifier: JPMJCR2543 funder_name: Japan Science and Technology Agency - identifier: JPMJAP2408 funder_name: Japan Science and Technology Agency - identifier: JP22KJ1028 funder_name: Japan Society for the Promotion of Science ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: 87e56d33-5957-4c56-8219-61f1222a3369 filename: sciadv.adt3886.pdf content_type: application/pdf size: 985375 md5: d34a333ecf4700ebd57236edbfeb27b7 ## Thumbnail fileset_id: 87e56d33-5957-4c56-8219-61f1222a3369 filename: sciadv.adt3886.pdf