{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Chen C"],"funding":["U.S. Department of Energy","U.S. Department of Energy (DOE)","DOE | SC | Basic Energy Sciences (BES)","National Science Foundation (NSF)","DOE | SC | Basic Energy Sciences","National Science Foundation"],"pagination":["7512"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10657405"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["14(1)"],"pubmed_abstract":["During a band-gap-tuned semimetal-to-semiconductor transition, Coulomb attraction between electrons and holes can cause spontaneously formed excitons near the zero-band-gap point, or the Lifshitz transition point. This has become an important route to realize bulk excitonic insulators - an insulating ground state distinct from single-particle band insulators. How this route manifests from weak to strong coupling is not clear. In this work, using angle-resolved photoemission spectroscopy (ARPES) and high-resolution synchrotron x-ray diffraction (XRD), we investigate the broken symmetry state across the semimetal-to-semiconductor transition in a leading bulk excitonic insulator candidate system Ta<sub>2</sub>Ni(Se,S)<sub>5</sub>. A broken symmetry phase is found to be continuously suppressed"],"journal":["Nature communications"],"pubmed_title":["Anomalous excitonic phase diagram in band-gap-tuned Ta<sub>2</sub>Ni(Se,S)<sub>5</sub>."],"pmcid":["PMC10657405"],"funding_grant_id":["DE-AC02-05-CH11231","DMR-2239171","DE-SC0022874"],"pubmed_authors":["Rotenberg E","da Silva Neto EH","Birgeneau RJ","Chen C","Kang Z","Louie SG","Scott K","Li Z","Ruff JPC","He Y","Ding S","Bostwick A","Wang S","Hashimoto M","Chen Y","Chen X","Tang W","Jozwiak C","Wang Y","Lu DH"],"additional_accession":[]},"is_claimable":false,"name":"Anomalous excitonic phase diagram in band-gap-tuned Ta<sub>2</sub>Ni(Se,S)<sub>5</sub>.","description":"During a band-gap-tuned semimetal-to-semiconductor transition, Coulomb attraction between electrons and holes can cause spontaneously formed excitons near the zero-band-gap point, or the Lifshitz transition point. This has become an important route to realize bulk excitonic insulators - an insulating ground state distinct from single-particle band insulators. How this route manifests from weak to strong coupling is not clear. In this work, using angle-resolved photoemission spectroscopy (ARPES) and high-resolution synchrotron x-ray diffraction (XRD), we investigate the broken symmetry state across the semimetal-to-semiconductor transition in a leading bulk excitonic insulator candidate system Ta<sub>2</sub>Ni(Se,S)<sub>5</sub>. A broken symmetry phase is found to be continuously suppressed","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 Nov","modification":"2025-04-22T09:27:43.992Z","creation":"2025-04-05T23:04:31.541Z"},"accession":"S-EPMC10657405","cross_references":{"pubmed":["37980419"],"doi":["10.1038/s41467-023-43365-1"]}}