Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 천상모 | - |
dc.date.accessioned | 2022-03-28T01:26:48Z | - |
dc.date.available | 2022-03-28T01:26:48Z | - |
dc.date.issued | 2020-07 | - |
dc.identifier.citation | PHYSICAL REVIEW B, v. 102, no. 4, article no. 041108 | en_US |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.issn | 2469-9969 | - |
dc.identifier.uri | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.102.041108 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/169429 | - |
dc.description.abstract | A Dirac fermion emerges as a result of interplay between symmetry and topology in condensed matter. Current research moves towards investigating the Dirac fermions in the presence of many-body effects in correlated systems. Here, we demonstrate the emergence of a correlation-induced symmetry-protected Dirac semimetal state in the lightly doped spin-orbit-coupled Mott insulator Sr2IrO4. We find that the nonsymmorphic crystalline symmetry stabilizes a Dirac line-node semimetal and that the correlation-induced symmetry-breaking electronic order further leads to a phase transition from the Dirac line-node to a Dirac point-node semimetal. The latter state is experimentally confirmed by angle-resolved photoemission spectroscopy and terahertz spectroscopy on Sr-2(Ir, Tb)O-4 and (Sr, La)(2)IrO4. Remarkably, the electrodynamics of the massless Dirac carriers is governed by the extremely small scattering rate of about 6 cm(-1) even at room temperature, which is iconic behavior of relativistic quasiparticles. Temperature-dependent changes in electrodynamic parameters are also consistently explained based on the Dirac point-node semimetal state. | en_US |
dc.description.sponsorship | This work was supported by the Science Research Center and the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (Grants No. 2015R1A5A1009962 and No. 2018R1A2B2005331). S.-W.K. and S.C. were supported by NRF through Basic Science Research Programs (Grant No. NRF-2018R1C1B6007607), the research fund of Hanyang University (HY-2017), and the POSCO Science Fellowship of POSCO TJ Park Foundation. W.S.K and C.K. were supported by the Institute for Basic Science in Korea (Grant No. IBSR009-G2). S.D.W. and X.C. acknowledge support from NSF Award No. DMR-1905801. G.C. acknowledges NSF support via grant DMR-1903888. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER PHYSICAL SOC | en_US |
dc.subject | ELECTRON-ELECTRON INTERACTIONS | en_US |
dc.subject | OPTICAL-CONSTANTS | en_US |
dc.subject | TEMPERATURE | en_US |
dc.subject | PHYSICS | en_US |
dc.subject | METAL | en_US |
dc.title | Nonsymmorphic Dirac semimetal and carrier dynamics in the doped spin-orbit-coupled Mott insulator Sr2IrO4 | en_US |
dc.type | Article | en_US |
dc.relation.no | 4 | - |
dc.relation.volume | 102 | - |
dc.identifier.doi | 10.1103/PhysRevB.102.041108 | - |
dc.relation.page | 1-6 | - |
dc.relation.journal | PHYSICAL REVIEW B | - |
dc.contributor.googleauthor | Han, J. W. | - |
dc.contributor.googleauthor | Kim, Sun-Woo | - |
dc.contributor.googleauthor | Kyung, W. S. | - |
dc.contributor.googleauthor | Kim, C. | - |
dc.contributor.googleauthor | Cao, G. | - |
dc.contributor.googleauthor | Chen, X. | - |
dc.contributor.googleauthor | Wilson, S. D. | - |
dc.contributor.googleauthor | Cheon, Sangmo | - |
dc.contributor.googleauthor | Lee, J. S. | - |
dc.relation.code | 2020052321 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF PHYSICS | - |
dc.identifier.pid | sangmocheon | - |
dc.identifier.orcid | https://orcid.org/0000-0002-1349-0112 | - |
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