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Soft x-ray diffraction from lattice constrained orbital order in Pr(Sr0.1Ca0.9)2Mn2O7

DOI: 10.1088/1742-6596/211/1/012007 DOI Help

Authors: T. Beale (University of Durham) , S. Bland (University of Durham) , R. Johnson (University of Durham) , P. Hatton (University of Durham) , J. C. Cezar (ESRF) , S. Dhesi (Diamond Light Source) , D. Prabhakaran (University of Oxford) , A. Boothroyd (University of Oxford)
Co-authored by industrial partner: No

Type: Conference Paper
Conference: Polarized Neutrons and Synchrotron X-rays for Magnetism Conference 2009
Peer Reviewed: Yes

State: Published (Approved)
Published: February 2010

Abstract: Controlling orbital occupancy is a fundamental prerequisite for orbitronics. It has been shown in the orthorhombic bilayer manganite Pr(Sr0.1Ca0.9)2Mn2O7 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 TOO2 and furthermore prove that there is no change in the occupied orbital type, however the orbital rotation causes a switch from 3x2?r2 to 3y2?r2 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 TN.

Journal Keywords: Antiferromagnetism; Calcium Compounds; Layers; Orthorhombic Lattices; Praseodymium Compounds; Rotation; Soft X Radiation; Strains; Strontium Compounds; Tetragonal Lattices

Subject Areas: Physics

Instruments: I06-Nanoscience

Other Facilities: ESRF

Added On: 04/03/2010 09:04

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