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Local Noncentrosymmetric Structure of Bi2Sr2CaCu2O8+y by X-ray Magnetic Circular Dichroism at Cu K-Edge XANES
Ivanov, AA; Ivanov, VG; Menushenkov, AP; Wilhelm, F; Rogalev, A; Puri, A; Joseph, B; Xu, W; Marcelli, A; Bianconi, A; Xu W(徐伟)
2018
Source PublicationJOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
ISSN1557-1939
EISSN1557-1947
Volume31Issue:3Pages:663-670
SubtypeArticle; Proceedings Paper
AbstractThe two-dimensional Bi2Sr2CaCu2O8+y (Bi2212), the most studied prototype cuprate superconductor, is a lamellar system made of a stack of two-dimensional corrugated CuO2 bilayers separated by Bi2O2 + y Sr-2 O-2 layers. While the large majority of theories, proposed to interpret unconventional high T (c) superconductivity in Bi2Sr2CaCu2O8+y , assume a centrosymmetric tetragonal CuO2 lattice for the [CuO2]Ca[CuO2] bilayer, here, we report new compelling results providing evidence for local noncentrosymmetric symmetry at the Cu atom. We have measured polarized Cu K-edge XANES (X-ray absorption near-edge structure) and the K-edge X-ray magnetic circular dichroism (XMCD) of a Bi2212 single-crystal near-optimum doping. The Cu K-edge XMCD signal was measured at ID12 beamline of ESRF with the k-vector of X-ray beam parallel to c-axis, i.e., with the electric field of X-ray beam E//ab, using a 17-T magnetic field parallel to the c-axis of a Bi2212 single crystal. Numerical simulations of the XMCD signal of Bi2212 by multiple scattering theory have shown agreement with the experimental XMCD signal only for the local structure with noncentrosymmetric Bb2b space group of Bi2Sr2CaCu2O8+y .
Conference TitleSuperstripes Conference
Conference PlaceITALY
KeywordBi2Sr2CaCu2O8+y (Bi2212) X-ray absorption near edge structure (XANES) X-ray magnetic circular dichroism (XMCD) Cu K-edge Noncentrosymmetric superconductivity
DOI10.1007/s10948-017-4418-5
WOS KeywordHIGH-T-C ; CHARGE-DENSITY-WAVE ; INCOMMENSURATE MODULATION ; NEUTRON-DIFFRACTION ; PEROVSKITE SUPERCONDUCTORS ; O SUPERCONDUCTOR ; STRIPE STRUCTURE ; SINGLE-CRYSTAL ; CRITICAL-POINT ; ABSORPTION
Indexed BySCI ; EI ; CPCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Applied ; Physics, Condensed Matter
WOS IDWOS:000424701400010
EI Accession Number20182105228612
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/285670
Collection多学科研究中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Ivanov, AA,Ivanov, VG,Menushenkov, AP,et al. Local Noncentrosymmetric Structure of Bi2Sr2CaCu2O8+y by X-ray Magnetic Circular Dichroism at Cu K-Edge XANES[J]. JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM,2018,31(3):663-670.
APA Ivanov, AA.,Ivanov, VG.,Menushenkov, AP.,Wilhelm, F.,Rogalev, A.,...&徐伟.(2018).Local Noncentrosymmetric Structure of Bi2Sr2CaCu2O8+y by X-ray Magnetic Circular Dichroism at Cu K-Edge XANES.JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM,31(3),663-670.
MLA Ivanov, AA,et al."Local Noncentrosymmetric Structure of Bi2Sr2CaCu2O8+y by X-ray Magnetic Circular Dichroism at Cu K-Edge XANES".JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM 31.3(2018):663-670.
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