Abstract
In the ferromagnetic metallic state of the colossal magnetoresistive (CMR) manganite La1.2Sr1.8Mn2O7, the spin-density distribution is essentially in agreement with the standard picture in which the unpaired electrons occupy the three t2g orbitals dxy, dyz, and dxz. However we find a small spin density (∼4% of the total Mn spin) on the apical O(2) oxygen atom at both 100 and 220 K, and we suggest that this is due to covalency effects. Surprisingly we find no evidence of spin on the other apical oxygen O(1) suggesting, that the Mn eg electron distribution along the c axis is highly anisotropic.
Original language | English |
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Article number | 214431 |
Pages (from-to) | 2144311-2144315 |
Number of pages | 5 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 65 |
Issue number | 21 |
DOIs | |
State | Published - Jun 1 2002 |
Externally published | Yes |