Direct Observation of Orbital Ordering inLa0.5Sr1.5MnO4Using Soft X-ray Diffraction
نویسندگان
چکیده
منابع مشابه
Separating the causes of orbital ordering in LaSr2Mn2O7 using resonant soft x-ray diffraction
Resonant soft x-ray diffraction has been used to probe the temperature dependent orbital and magnetic structure of LaSr2Mn2O7. Previous crystallographic studies have shown that this material has almost no MnO6 oxygen displacement due to Jahn-Teller distortions at low temperatures. Within the low-temperature A-type antiferromagnetic phase, we found strong intensity at the ( 1 4 , 1 4 , 0) orbita...
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The study of the Verwey transition in magnetite has been a matter of intense study during the last years [1,2]. The mechanism proposed by Verwey [3] was the charge localization and ordering of the electrons at the iron octahedral sites giving rise to an ordered sequence of Fe3þ and Fe2þ ions. Recent x-ray diffraction and resonant x-ray scattering at the iron K edge have strongly modified this d...
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We have conducted the first soft x-ray diffraction experiments from a bulk single crystal, studying the bilayer manganite La2-2xSr1+2xMn2O7 with x=0.475 in which we were able to access the (002) Bragg reflection using soft x rays. The Bragg reflection displays a strong resonant enhancement at the L(III) and L(II) manganese absorption edges. We demonstrate that the resonant enhancement of the ma...
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Correlated-electron materials such as transition-metal oxides have attracted enormous interest because of their interesting physical properties, including superconductivity and colossal magnetoresistance. An electron in a correlated electron material has three attributes: charge, spin, and orbital. The orbital represents the shape of the electron distribution, and the orbital degree of freedom ...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2003
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.91.167205