000843943 001__ 843943 000843943 005__ 20230426083156.0 000843943 0247_ $$2doi$$a10.1103/PhysRevB.95.174301 000843943 0247_ $$2ISSN$$a0163-1829 000843943 0247_ $$2ISSN$$a0556-2805 000843943 0247_ $$2ISSN$$a1094-1622 000843943 0247_ $$2ISSN$$a1095-3795 000843943 0247_ $$2ISSN$$a1098-0121 000843943 0247_ $$2ISSN$$a1550-235X 000843943 0247_ $$2ISSN$$a2469-9950 000843943 0247_ $$2ISSN$$a2469-9969 000843943 0247_ $$2Handle$$a2128/17492 000843943 0247_ $$2WOS$$aWOS:000400659400001 000843943 0247_ $$2altmetric$$aaltmetric:16064749 000843943 037__ $$aFZJ-2018-01466 000843943 082__ $$a530 000843943 1001_ $$0P:(DE-HGF)0$$aZbiri, Mohamed$$b0$$eCorresponding author 000843943 245__ $$aAbsence of magnetism in the superconductor B a 2 T i 2 F e 2 A s 4 O : Insights from inelastic neutron scattering measurements and ab initio calculations of phonon spectra 000843943 260__ $$aWoodbury, NY$$bInst.$$c2017 000843943 3367_ $$2DRIVER$$aarticle 000843943 3367_ $$2DataCite$$aOutput Types/Journal article 000843943 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1519651587_3044 000843943 3367_ $$2BibTeX$$aARTICLE 000843943 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000843943 3367_ $$00$$2EndNote$$aJournal Article 000843943 520__ $$aBa2Ti2Fe2As4O is a self-doped superconductor exhibiting a Tc∼21.5K and containing, distinctively with respect to other Fe-based superconductors, not only [Fe2As2] layers but also conducting [Ti2O] sheets. This compound exhibits a transition at T∗∼125K, which has tentatively been assigned in the literature to a possible density-wave order. However, the nature of this density wave (whether it is charge- or spin-induced) is still under debate. Magnetism in Ba2Ti2Fe2As4O has never been experimentally confirmed, which raises the question whether this superconductor might be nonmagnetic or exhibiting a very weak magnetism. Here, we report evidence from inelastic neutron scattering (INS) measurements and ab initio calculations of phonon spectra pointing towards a possible absence of magnetism in Ba2Ti2Fe2As4O. The INS measurements did not reveal any noticeable magnetic effects in Ba2Ti2Fe2As4O, within the accessible (Q, E) space. The effect of magnetism on describing phonon spectra was further investigated by performing ab initio calculations. In this context, nonmagnetic calculations reproduced well the measured phonon spectra. Therefore, our results indicate a nonmagnetic character of the superconductor Ba2Ti2Fe2As4O. 000843943 536__ $$0G:(DE-HGF)POF3-6G15$$a6G15 - FRM II / MLZ (POF3-6G15)$$cPOF3-6G15$$fPOF III$$x0 000843943 536__ $$0G:(DE-HGF)POF3-6G4$$a6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)$$cPOF3-623$$fPOF III$$x1 000843943 542__ $$2Crossref$$i2017-05-01$$uhttp://link.aps.org/licenses/aps-default-license 000843943 588__ $$aDataset connected to CrossRef 000843943 65027 $$0V:(DE-MLZ)SciArea-120$$2V:(DE-HGF)$$aCondensed Matter Physics$$x0 000843943 65027 $$0V:(DE-MLZ)SciArea-170$$2V:(DE-HGF)$$aMagnetism$$x1 000843943 65017 $$0V:(DE-MLZ)GC-1604-2016$$2V:(DE-HGF)$$aMagnetic Materials$$x0 000843943 693__ $$0EXP:(DE-MLZ)External-20140101$$5EXP:(DE-MLZ)External-20140101$$eMeasurement at external facility$$x0 000843943 7001_ $$0P:(DE-Juel1)151336$$aJin, Wentao$$b1$$eCorresponding author$$ufzj 000843943 7001_ $$0P:(DE-Juel1)131047$$aXiao, Yinguo$$b2$$ufzj 000843943 7001_ $$0P:(DE-HGF)0$$aSun, Yunlei$$b3 000843943 7001_ $$0P:(DE-Juel1)130991$$aSu, Yixi$$b4$$ufzj 000843943 7001_ $$0P:(DE-Juel1)157770$$aDemirdis, Sultan$$b5$$ufzj 000843943 7001_ $$0P:(DE-HGF)0$$aCao, Guanghan$$b6 000843943 77318 $$2Crossref$$3journal-article$$a10.1103/physrevb.95.174301$$bAmerican Physical Society (APS)$$d2017-05-01$$n17$$p174301$$tPhysical Review B$$v95$$x2469-9950$$y2017 000843943 773__ $$0PERI:(DE-600)2844160-6$$a10.1103/PhysRevB.95.174301$$gVol. 95, no. 17, p. 174301$$n17$$p174301$$tPhysical review / B$$v95$$x2469-9950$$y2017 000843943 8564_ $$uhttps://juser.fz-juelich.de/record/843943/files/PhysRevB.95.174301.pdf$$yOpenAccess 000843943 8564_ $$uhttps://juser.fz-juelich.de/record/843943/files/PhysRevB.95.174301.gif?subformat=icon$$xicon$$yOpenAccess 000843943 8564_ $$uhttps://juser.fz-juelich.de/record/843943/files/PhysRevB.95.174301.jpg?subformat=icon-1440$$xicon-1440$$yOpenAccess 000843943 8564_ $$uhttps://juser.fz-juelich.de/record/843943/files/PhysRevB.95.174301.jpg?subformat=icon-180$$xicon-180$$yOpenAccess 000843943 8564_ $$uhttps://juser.fz-juelich.de/record/843943/files/PhysRevB.95.174301.jpg?subformat=icon-640$$xicon-640$$yOpenAccess 000843943 8564_ $$uhttps://juser.fz-juelich.de/record/843943/files/PhysRevB.95.174301.pdf?subformat=pdfa$$xpdfa$$yOpenAccess 000843943 909CO $$ooai:juser.fz-juelich.de:843943$$pdnbdelivery$$pVDB$$pVDB:MLZ$$pdriver$$popen_access$$popenaire 000843943 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)151336$$aForschungszentrum Jülich$$b1$$kFZJ 000843943 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)131047$$aForschungszentrum Jülich$$b2$$kFZJ 000843943 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130991$$aForschungszentrum Jülich$$b4$$kFZJ 000843943 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)157770$$aForschungszentrum Jülich$$b5$$kFZJ 000843943 9131_ $$0G:(DE-HGF)POF3-6G15$$1G:(DE-HGF)POF3-6G0$$2G:(DE-HGF)POF3-600$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF3-6G15$$aDE-HGF$$bForschungsbereich Materie$$lGroßgeräte: Materie$$vFRM II / MLZ$$x0 000843943 9131_ $$0G:(DE-HGF)POF3-623$$1G:(DE-HGF)POF3-620$$2G:(DE-HGF)POF3-600$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF3-6G4$$aDE-HGF$$bForschungsbereich Materie$$lVon Materie zu Materialien und Leben$$vFacility topic: Neutrons for Research on Condensed Matter$$x1 000843943 9141_ $$y2018 000843943 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS 000843943 915__ $$0StatID:(DE-HGF)0600$$2StatID$$aDBCoverage$$bEbsco Academic Search 000843943 915__ $$0LIC:(DE-HGF)APS-112012$$2HGFVOC$$aAmerican Physical Society Transfer of Copyright Agreement 000843943 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR$$bPHYS REV B : 2015 000843943 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection 000843943 915__ $$0StatID:(DE-HGF)0110$$2StatID$$aWoS$$bScience Citation Index 000843943 915__ $$0StatID:(DE-HGF)0111$$2StatID$$aWoS$$bScience Citation Index Expanded 000843943 915__ $$0StatID:(DE-HGF)9900$$2StatID$$aIF < 5 000843943 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess 000843943 915__ $$0StatID:(DE-HGF)0030$$2StatID$$aPeer Review$$bASC 000843943 915__ $$0StatID:(DE-HGF)1150$$2StatID$$aDBCoverage$$bCurrent Contents - Physical, Chemical and Earth Sciences 000843943 915__ $$0StatID:(DE-HGF)0300$$2StatID$$aDBCoverage$$bMedline 000843943 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bThomson Reuters Master Journal List 000843943 920__ $$lyes 000843943 9201_ $$0I:(DE-Juel1)JCNS-FRM-II-20110218$$kJCNS (München) ; 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