Abstract
The linear magnetoelectric response of CrO at zero temperature is calculated from first principles by tracking the change in magnetization under a macroscopic electric field. Both the spin and the orbital contributions to the induced magnetization are computed, and in each case the response is decomposed into lattice and electronic parts. We find that the transverse response is dominated by the spin-lattice and spin-electronic contributions, whose calculated values are consistent with static and optical magnetoelectric measurements. In the case of the longitudinal response, orbital contributions dominate over spin contributions, but the net calculated longitudinal response remains much smaller than the experimentally measured one at low temperatures. We also discuss the absolute sign of the magnetoelectric coupling in the two time-reversed magnetic domains of CrO.
- Received 24 July 2012
- Publisher error corrected 11 April 2013
DOI:https://doi.org/10.1103/PhysRevB.86.094430
©2012 American Physical Society
Corrections
11 April 2013