000187986 001__ 187986 000187986 005__ 20250129094305.0 000187986 0247_ $$2doi$$a10.1103/PhysRevB.91.035124 000187986 0247_ $$2ISSN$$a0163-1829 000187986 0247_ $$2ISSN$$a0556-2805 000187986 0247_ $$2ISSN$$a1095-3795 000187986 0247_ $$2ISSN$$a1098-0121 000187986 0247_ $$2ISSN$$a1550-235X 000187986 0247_ $$2Handle$$a2128/8426 000187986 0247_ $$2WOS$$aWOS:000348725500002 000187986 0247_ $$2altmetric$$aaltmetric:2814166 000187986 037__ $$aFZJ-2015-01475 000187986 082__ $$a530 000187986 1001_ $$0P:(DE-HGF)0$$avan Well, N.$$b0 000187986 245__ $$aLow-temperature structural investigations of the frustrated quantum antiferromagnets ${\mathrm{Cs}}_{2}\mathrm{Cu}\left({\mathrm{Cl}}_{4-x}{\mathrm{Br}}_{x}\right)$ 000187986 260__ $$aCollege Park, Md.$$bAPS$$c2015 000187986 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1424875225_18038 000187986 3367_ $$2DataCite$$aOutput Types/Journal article 000187986 3367_ $$00$$2EndNote$$aJournal Article 000187986 3367_ $$2BibTeX$$aARTICLE 000187986 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000187986 3367_ $$2DRIVER$$aarticle 000187986 4001_ $$aWell, N. 000187986 520__ $$aPowder x-ray diffraction (PXRD) and single-crystal neutron scattering were used to study in detail the structural properties of the Cs2Cu(Cl4−xBrx) series, good realizations of layered triangular antiferromagnets. Detailed temperature-dependent PXRD reveal a pronounced anisotropy of the thermal expansion for the three different crystal directions of the orthorhombic structure without any structural phase transition down to 20 K. Remarkably, the anisotropy of the thermal expansion varies for different x, leading to distinct changes of the geometry of the local Cu environment as a function of temperature and composition. The refinement of the atomic positions confirms that for x=1 and 2, the Br atoms occupy distinct halogen sites in the [CuX4] tetrahedra (X = Cl, Br). The precise structure data are used to calculate the magnetic exchange couplings using density functional methods for x=0. We observe a pronounced temperature dependence of the calculated magnetic exchange couplings, reflected in the strong sensitivity of the magnetic exchange couplings on structural details. These calculations are in good agreement with the experimentally established values for Cs2CuCl4 if one takes the low-temperature structure data as a starting point. 000187986 536__ $$0G:(DE-HGF)POF3-6G15$$a6G15 - FRM II / MLZ (POF3-6G15)$$cPOF3-6G15$$fPOF III$$x0 000187986 536__ $$0G:(DE-HGF)POF3-6G4$$a6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)$$cPOF3-623$$fPOF III$$x1 000187986 542__ $$2Crossref$$i2015-01-21$$uhttp://link.aps.org/licenses/aps-default-license 000187986 588__ $$aDataset connected to CrossRef, juser.fz-juelich.de 000187986 65027 $$0V:(DE-MLZ)SciArea-170$$2V:(DE-HGF)$$aMagnetism$$x0 000187986 65027 $$0V:(DE-MLZ)SciArea-120$$2V:(DE-HGF)$$aCondensed Matter Physics$$x1 000187986 65027 $$0V:(DE-MLZ)SciArea-240$$2V:(DE-HGF)$$aCrystallography$$x2 000187986 65017 $$0V:(DE-MLZ)GC-1604-2016$$2V:(DE-HGF)$$aMagnetic Materials$$x3 000187986 693__ $$0EXP:(DE-MLZ)HEIDI-20140101$$1EXP:(DE-MLZ)FRMII-20140101$$5EXP:(DE-MLZ)HEIDI-20140101$$6EXP:(DE-MLZ)SR9b-20140101$$aForschungs-Neutronenquelle Heinz Maier-Leibnitz$$eHeiDi: Single crystal diffractometer on hot source$$fSR9b$$x0 000187986 7001_ $$0P:(DE-HGF)0$$aFoyevtsova, K.$$b1 000187986 7001_ $$0P:(DE-HGF)0$$aGottlieb-Schönmeyer, S.$$b2 000187986 7001_ $$0P:(DE-HGF)0$$aRitter, F.$$b3 000187986 7001_ $$0P:(DE-HGF)0$$aManna, R. S.$$b4 000187986 7001_ $$0P:(DE-HGF)0$$aWolf, B.$$b5 000187986 7001_ $$0P:(DE-Juel1)164297$$aMeven, M.$$b6$$ufzj 000187986 7001_ $$0P:(DE-HGF)0$$aPfleiderer, C.$$b7 000187986 7001_ $$0P:(DE-HGF)0$$aLang, M.$$b8 000187986 7001_ $$0P:(DE-HGF)0$$aAssmus, W.$$b9 000187986 7001_ $$0P:(DE-HGF)0$$aValentí, R.$$b10 000187986 7001_ $$0P:(DE-HGF)0$$aKrellner, C.$$b11$$eCorresponding Author 000187986 77318 $$2Crossref$$3journal-article$$a10.1103/physrevb.91.035124$$bAmerican Physical Society (APS)$$d2015-01-21$$n3$$p035124$$tPhysical Review B$$v91$$x1098-0121$$y2015 000187986 773__ $$0PERI:(DE-600)2844160-6$$a10.1103/PhysRevB.91.035124$$gVol. 91, no. 3, p. 035124$$n3$$p035124$$tPhysical review / B$$v91$$x1098-0121$$y2015 000187986 8564_ $$uhttps://juser.fz-juelich.de/record/187986/files/FZJ-2015-01475.pdf$$yOpenAccess 000187986 8564_ $$uhttps://juser.fz-juelich.de/record/187986/files/FZJ-2015-01475.jpg?subformat=icon-144$$xicon-144$$yOpenAccess 000187986 8564_ $$uhttps://juser.fz-juelich.de/record/187986/files/FZJ-2015-01475.jpg?subformat=icon-180$$xicon-180$$yOpenAccess 000187986 8564_ $$uhttps://juser.fz-juelich.de/record/187986/files/FZJ-2015-01475.jpg?subformat=icon-640$$xicon-640$$yOpenAccess 000187986 909CO $$ooai:juser.fz-juelich.de:187986$$pdnbdelivery$$pVDB$$popen_access$$pdriver$$pVDB:MLZ$$popenaire 000187986 915__ $$0LIC:(DE-HGF)APS-112012$$2HGFVOC$$aAmerican Physical Society Transfer of Copyright Agreement 000187986 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR 000187986 915__ $$0StatID:(DE-HGF)0110$$2StatID$$aWoS$$bScience Citation Index 000187986 915__ $$0StatID:(DE-HGF)0111$$2StatID$$aWoS$$bScience Citation Index Expanded 000187986 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection 000187986 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bThomson Reuters Master Journal List 000187986 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS 000187986 915__ $$0StatID:(DE-HGF)0300$$2StatID$$aDBCoverage$$bMedline 000187986 915__ $$0StatID:(DE-HGF)0420$$2StatID$$aNationallizenz 000187986 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess 000187986 915__ $$0StatID:(DE-HGF)1150$$2StatID$$aDBCoverage$$bCurrent Contents - Physical, Chemical and Earth Sciences 000187986 915__ $$0StatID:(DE-HGF)9900$$2StatID$$aIF < 5 000187986 9141_ $$y2015 000187986 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)164297$$aForschungszentrum Jülich GmbH$$b6$$kFZJ 000187986 9101_ $$0I:(DE-HGF)0$$6P:(DE-Juel1)131831$$aExternal Institute$$b8$$kExtern 000187986 9130_ $$0G:(DE-HGF)POF2-54G24$$1G:(DE-HGF)POF2-540$$2G:(DE-HGF)POF2-500$$aDE-HGF$$bStruktur der Materie$$lForschung mit Photonen, Neutronen und Ionen (PNI)$$vJCNS$$x0 000187986 9131_ $$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 000187986 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$$x1 000187986 920__ $$lyes 000187986 9201_ $$0I:(DE-Juel1)JCNS-FRM-II-20110218$$kJCNS (München) ; Jülich Centre for Neutron Science JCNS (München) ; JCNS-FRM-II$$lJCNS-FRM-II$$x0 000187986 9201_ $$0I:(DE-Juel1)JCNS-2-20110106$$kJCNS-2$$lStreumethoden$$x1 000187986 9201_ $$0I:(DE-Juel1)PGI-4-20110106$$kPGI-4$$lStreumethoden$$x2 000187986 9201_ $$0I:(DE-82)080009_20140620$$kJARA-FIT$$lJARA-FIT$$x3 000187986 9801_ $$aFullTexts 000187986 980__ $$ajournal 000187986 980__ $$aVDB 000187986 980__ $$aUNRESTRICTED 000187986 980__ $$aFullTexts 000187986 980__ $$aI:(DE-Juel1)JCNS-FRM-II-20110218 000187986 980__ $$aI:(DE-Juel1)JCNS-2-20110106 000187986 980__ $$aI:(DE-Juel1)PGI-4-20110106 000187986 980__ $$aI:(DE-82)080009_20140620 000187986 981__ $$aI:(DE-Juel1)JCNS-2-20110106 000187986 981__ $$aI:(DE-Juel1)JCNS-2-20110106 000187986 981__ $$aI:(DE-Juel1)PGI-4-20110106 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.86.1335 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.88.137203 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.68.134424 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.95.127202 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.67.104431 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1143/JPSJS.74S.135 000187986 999C5 $$1S. Bailleul$$2Crossref$$oS. Bailleul 1991$$y1991 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1107/S0365110X60001928 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1021/cg100666t 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.83.064425 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.83.125126 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1088/0022-3735/16/5/018 000187986 999C5 $$1V. Petricek$$2Crossref$$9-- missing cx lookup --$$a10.1515/zkri-2014-1737$$p345 -$$tZ. Kristallogr.$$v229$$y2014 000187986 999C5 $$1Z. Tylczynski$$2Crossref$$oZ. Tylczynski 1992$$y1992 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.59.1743 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.77.3865 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1016/S0022-4596(03)00274-3 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevB.73.134418 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevLett.106.217201 000187986 999C5 $$2Crossref$$9-- missing cx lookup --$$a10.1107/S0567739474001379