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Origin of ferroelectric polarization in spiral magnetic structure of MnWO(4)

DSpace at IIT Bombay

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Title Origin of ferroelectric polarization in spiral magnetic structure of MnWO(4)
 
Creator SHANAVAS, KV
CHOUDHURY, D
DASGUPTA, I
SHARMA, SM
SARMA, DD
 
Subject multiferroics
spectroscopy
transition
spectra
oxide
spin
 
Description Magnetism and the origin of ferroelectricity in the multiferroic MnWO(4) 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 MnWO(4). The origin of spin-orbit interaction in this compound with a nominally d(5) L=0 orbitally quenched state is elucidated by analyzing results of x-ray absorption spectroscopy.
 
Publisher AMER PHYSICAL SOC
 
Date 2011-07-16T22:36:41Z
2011-12-26T12:49:59Z
2011-12-27T05:35:52Z
2011-07-16T22:36:41Z
2011-12-26T12:49:59Z
2011-12-27T05:35:52Z
2010
 
Type Article
 
Identifier PHYSICAL REVIEW B, 81(21), -
1098-0121
http://dx.doi.org/10.1103/PhysRevB.81.212406
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4548
http://hdl.handle.net/10054/4548
 
Language en