Shanavas, K. V. ; Choudhury, Debraj ; Dasgupta, I. ; Sharma, Surinder M. ; Sarma, D. D. (2010) Origin of ferroelectric polarization in spiral magnetic structure of MnWO4 Physical Review B: Condensed Matter and Materials Physics, 81 (21). 212406_1-212406_4. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v81/i21/e212406
Related URL: http://dx.doi.org/10.1103/PhysRevB.81.212406
Abstract
Magnetism and the origin of ferroelectricity in the multiferroic MnWO4 are studied using ab initio electronic-structure calculations, correctly reproducing the magnetic ground state. The calculated ferroelectric polarization is in good agreement with experiments. Our results reveal that spin-orbit interaction is necessary and sufficient to explain the observed ferroelectric polarization, establishing an entirely electronic origin of ferroelectricity in MnWO4. The origin of spin-orbit interaction in this compound with a nominally d5 L=0 orbitally quenched state is elucidated by analyzing results of x-ray absorption spectroscopy.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 46462 |
| Deposited On: | 04 Jul 2011 12:14 |
| Last Modified: | 17 Apr 2012 09:38 |
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