NDLI: Theory of magnetic field control on polarization in multiferroic RCrO3 compounds

Content Provider	Springer Nature Link
Author	Apostolov, Angel T. Apostolova, Iliana N. Wesseliwa, Julia M.
Copyright Year	2015
Abstract	A microscopic mechanism to describe the magnetic field H dependence of the polarization P is proposed on the basis of a microscopic model for RCrO3 including the spin-phonon interaction. Using the Green’s function theory in Peierls systems we have studied the two contributions to P due to the antisymmetric exchange Dzyaloshinskii-Moriya interaction P AS and the magnetostriction P MS . The behaviour of P(H) – increase or decrease – in different multiferroics can be explained in our model taking into account the second order spin-phonon interaction constants. When a magnetic field is applied to a magnetoelectric material, the material is strained. H changes the average of the spin operator products and so P. Moreover, H renormalizes the elastic constant which explains the strain effect. From here we have found a qualitative relationship between pressure and magnetic field effects on P. The observed results are in good qualitatively agreement with the experimental data.
Starting Page	1
Ending Page	9
Page Count	9
File Format	PDF
ISSN	14346028
Journal	The European Physical Journal B
Volume Number	88
Issue Number	12
e-ISSN	14346036
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-12-09
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Solid State and Materials Condensed Matter Physics Physics Statistical Physics, Dynamical Systems and Complexity Fluid- and Aerodynamics Solid State Physics
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Condensed Matter Physics

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