% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Guo:872530, author = {Guo, H. and Zhao, L. and Schmidt, W. and Fernández-Díaz, M. T. and Becker, Ch. and Melendez-Sans, A. and Peng, W. and Zbiri, M. and Hansmann, P. and Komarek, A. C.}, title = {{M}ultiferroic properties of melanothallite {C}u 2 {OC}l 2}, journal = {Physical review materials}, volume = {3}, number = {12}, issn = {2475-9953}, address = {College Park, MD}, publisher = {APS}, reportid = {FZJ-2020-00050}, pages = {124405}, year = {2019}, abstract = {Here we report on P−E hysteresis loop measurements that unravel the ferroelectric nature of melanothallite Cu2OCl2, a new multiferroic material with high critical temperature. Its spin structure was investigated by polarized and unpolarized neutron scattering experiments which reveal a cycloidal magnetic structure with vector chirality (magnetic polarity) that can be inverted by opposite poling of the sample with an inverted electric field. This shows that Cu2OCl2 is a spin-induced ferroelectric material. Finally, we show that the ferroelectric properties of Cu2OCl2 are driven by the inverse Dzyaloshinskii-Moriya interaction mechanism which is also able to predict the observed direction of the ferroelectric polarization properly. The origin of the noncollinear spin structure in melanothallite are competing AFM-FM exchange couplings which we estimate from a combined ab initio + cluster configuration interaction calculation.}, cin = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-ILL}, ddc = {530}, cid = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 / $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-ILL-20110128}, pnm = {144 - Controlling Collective States (POF3-144) / 524 - Controlling Collective States (POF3-524) / 6212 - Quantum Condensed Matter: Magnetism, Superconductivity (POF3-621) / 6213 - Materials and Processes for Energy and Transport Technologies (POF3-621) / 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)}, pid = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-524 / G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6213 / G:(DE-HGF)POF3-6G4}, experiment = {EXP:(DE-Juel1)ILL-IN12-20150421}, typ = {PUB:(DE-HGF)16}, UT = {WOS:000502803200003}, doi = {10.1103/PhysRevMaterials.3.124405}, url = {https://juser.fz-juelich.de/record/872530}, }