Soft x-ray diffraction from lattice constrained orbital order in Pr(Sr 0.1 Ca 0.9 ) 2 Mn 2 O 7
Soft x-ray diffraction from lattice constrained orbital order in Pr(Sr 0.1 Ca 0.9 ) 2 Mn 2 O 7
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Pr(Sr 0.1 Ca 0.9 ) 2 Mn 2 O 7 晶格约束轨道序的软 X 射线衍射
DOI：
10.1088/1742-6596/211/1/012007
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Beale T
中科院分区：
文献类型：
--
作者：
Beale T
Controlling orbital occupancy is a fundamental prerequisite for orbitronics. It has been shown in the orthorhombic bilayer manganite Pr(Sr{sub 0.1}Ca{sub 0.9}){sub 2}Mn{sub 2}O{sub 7} that the direction of orbital order stripes can be influenced by controlling temperature or through inducing strain in the material. In this paper we have used resonant soft x-ray diffraction at the Mn L-edge to confirm the rotation of the orbital direction T{sub OO2} and furthermore prove that there is no change in the occupied orbital type, however the orbital rotation causes a switch from 3{sub x}{sup 2}{sub -r}{sup 2} to 3{sub y}{sup 2}{sub -r}{sup 2} on a single site. We find that unlike the tetragonal bilayer manganites, where an onset of A-type AFM quenches the orbital order, no such effect is found on the orbital order below T{sub N}.
Controlling orbital occupancy is a fundamental prerequisite for orbitronics. It has been shown in the orthorhombic bilayer manganite Pr(Sr{sub 0.1}Ca{sub 0.9}){sub 2}Mn{sub 2}O{sub 7} that the direction of orbital order stripes can be influenced by controlling temperature or through inducing strain in the material. In this paper we have used resonant soft x-ray diffraction at the Mn L-edge to confirm the rotation of the orbital direction T{sub OO2} and furthermore prove that there is no change in the occupied orbital type, however the orbital rotation causes a switch from 3{sub x}{sup 2}{sub -r}{sup 2} to 3{sub y}{sup 2}{sub -r}{sup 2} on a single site. We find that unlike the tetragonal bilayer manganites, where an onset of A-type AFM quenches the orbital order, no such effect is found on the orbital order below T{sub N}.