Back to Search
Start Over
Antiferromagnetically Spin Polarized Oxygen Observed in MagnetoelectricTbMn2O5
- Source :
- Physical Review Letters. 105
- Publication Year :
- 2010
- Publisher :
- American Physical Society (APS), 2010.
-
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.
- Subjects :
- Physics
Spin polarization
Condensed matter physics
Scattering
General Physics and Astronomy
02 engineering and technology
021001 nanoscience & nanotechnology
Polarization (waves)
01 natural sciences
3. Good health
Magnetic anisotropy
Square pyramid
0103 physical sciences
Antiferromagnetism
Condensed Matter::Strongly Correlated Electrons
Wave vector
Multiferroics
010306 general physics
0210 nano-technology
Subjects
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 105
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi...........be13b88ade01e1af1e5f37d9ecc5d342