Beale, TAW; Wilkins, SB; Johnson, RD; Bland, SR; Joly, Y; Forrest, TR; McMorrow, DF; ... Hatton, PD; + view all Beale, TAW; Wilkins, SB; Johnson, RD; Bland, SR; Joly, Y; Forrest, TR; McMorrow, DF; Yakhou, F; Prabhakaran, D; Boothroyd, AT; Hatton, PD; - view fewer (2010) Antiferromagnetically Spin Polarized Oxygen Observed in Magnetoelectric TbMn2O5. PHYS REV LETT , 105 (8) , Article 087203. 10.1103/PhysRevLett.105.087203.

Preview

PDF 130222.pdf Download (435kB)

Abstract

We report the direct measurement of antiferromagnetic spin polarization at the oxygen sites in the multiferroic TbMn2O5, through resonant soft x-ray magnetic scattering. This supports recent theoretical models suggesting that the oxygen spin polarization is key to the magnetoelectric coupling mechanism. The spin polarization is observed through a resonantly enhanced diffraction signal at the oxygen K edge at the commensurate antiferromagnetic wave vector. Using the FDMNES code we have accurately reproduced the experimental data. We have established that the resonance arises through the spin polarization on the oxygen sites hybridized with the square based pyramid Mn3+ ions. Furthermore we have discovered that the position of the Mn3+ ion directly influences the oxygen spin polarization.

Download activity - last month

Export as JSONXMLCSV

Download activity - last 12 months

Export as JSONXMLCSV

Downloads by country - last 12 months

Export as CSVXMLJSON

Archive Staff Only

View Item