Thermally induced rotation of 3d orbital stripes in Pr(Sr0.1Ca0.9)(2)Mn2O7

Beale, TAW; Bland, SR; Johnson, RD; Hatton, PD; Cezar, JC; Dhesi, SS; Zimmermann, MV; Prabhakaran, D; Boothroyd, AT

doi:10.1103/physrevb.79.054433

Thermally induced rotation of 3d orbital stripes in Pr(Sr0.1Ca0.9)(2)Mn2O7

Beale, TAW; Bland, SR; Johnson, RD; Hatton, PD; Cezar, JC; Dhesi, SS; Zimmermann, MV; Prabhakaran, D; Boothroyd, AT

Authors

TAW Beale

SR Bland

RD Johnson

Professor Peter Hatton p.d.hatton@durham.ac.uk
Professor

JC Cezar

SS Dhesi

MV Zimmermann

D Prabhakaran

AT Boothroyd

Abstract

We have investigated orbital ordering in the bilayer manganite, Pr(Sr0.1Ca0.9)2Mn2O7, using synchrotron x-ray diffraction techniques, in particular resonant soft x-ray diffraction. Diffraction signals are observed at (0,12,0) above 300 K and (12,0,0) below 300 K, corresponding to orbital stripes along the a and b axes, respectively. The previously observed transition at 300 K is evidence of a rotation of the orientation of the 3d orbital stripes. Large resonances of the orbital signals are observed at the Mn L edges, with a complex dependence on incident photon energy indicative of a weakly Jahn-Teller distorted system. A structural transition observed at 92 K is found not to involve a further change in the orbital order.

Citation

Beale, T., Bland, S., Johnson, R., Hatton, P., Cezar, J., Dhesi, S., …Boothroyd, A. (2009). Thermally induced rotation of 3d orbital stripes in Pr(Sr0.1Ca0.9)(2)Mn2O7. Physical review B, 79(5), Article 054433. https://doi.org/10.1103/physrevb.79.054433

Journal Article Type	Article
Publication Date	Feb 1, 2009
Deposit Date	Nov 27, 2012
Publicly Available Date	Nov 27, 2012
Journal	Physical Review B
Print ISSN	1098-0121
Electronic ISSN	1550-235X
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	79
Issue	5
Article Number	054433
DOI	https://doi.org/10.1103/physrevb.79.054433
Keywords	Charge, Manganites, LA0.5SR1.5MNO4, LA2-2XSR1+2XMN2O, State.