Bi-quadratic magnetoelectric coupling in underdoped La2CuO4+x

Shantanu Mukherjee; Brian Møller Andersen; Z. Viskadourakis; I. Radulov; C. Panagopoulos

doi:10.1007/s10948-012-2059-2

Bi-quadratic magnetoelectric coupling in underdoped La₂CuO_4+x

Shantanu Mukherjee, Brian Møller Andersen, Z. Viskadourakis, I. Radulov, C. Panagopoulos

2 Citationer (Scopus)

Abstract

The recent discovery of relaxor ferroelectricity and magnetoelectric effect in lightly doped cuprate material La₂CuO₄_+x has provided a number of questions concerning its theoretical description. Using a Ginzburg–Landau free energy approach, it has been argued that the magnetoelectric effect can be explained by bi-quadratic interaction terms in the free energy. Here, by using the same free energy functional, we study the variety of behavior which can emerge in the electric polarization under an external magnetic field. Subsequently, we discuss the role of Dzyaloshinskii–Moriya interaction in generating this magnetoelectric response. This work is particularly relevant for such relaxor systems where the material-dependent parameters would be affected by changes in, e.g., chemical doping or cooling rate.

Originalsprog	Engelsk
Tidsskrift	Journal of Superconductivity and Novel Magnetism
Vol/bind	26
Udgave nummer	5
Sider (fra-til)	1649-1652
ISSN	1557-1939
DOI	https://doi.org/10.1007/s10948-012-2059-2
Status	Udgivet - 1 maj 2013

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10.1007/s10948-012-2059-2

Citationsformater

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title = "Bi-quadratic magnetoelectric coupling in underdoped La2CuO4+x",

abstract = "The recent discovery of relaxor ferroelectricity and magnetoelectric effect in lightly doped cuprate material La2CuO4+x has provided a number of questions concerning its theoretical description. Using a Ginzburg–Landau free energy approach, it has been argued that the magnetoelectric effect can be explained by bi-quadratic interaction terms in the free energy. Here, by using the same free energy functional, we study the variety of behavior which can emerge in the electric polarization under an external magnetic field. Subsequently, we discuss the role of Dzyaloshinskii–Moriya interaction in generating this magnetoelectric response. This work is particularly relevant for such relaxor systems where the material-dependent parameters would be affected by changes in, e.g., chemical doping or cooling rate.",

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T1 - Bi-quadratic magnetoelectric coupling in underdoped La2CuO4+x

AU - Mukherjee, Shantanu

AU - Andersen, Brian Møller

AU - Viskadourakis, Z.

AU - Radulov, I.

AU - Panagopoulos, C.

PY - 2013/5/1

Y1 - 2013/5/1

N2 - The recent discovery of relaxor ferroelectricity and magnetoelectric effect in lightly doped cuprate material La2CuO4+x has provided a number of questions concerning its theoretical description. Using a Ginzburg–Landau free energy approach, it has been argued that the magnetoelectric effect can be explained by bi-quadratic interaction terms in the free energy. Here, by using the same free energy functional, we study the variety of behavior which can emerge in the electric polarization under an external magnetic field. Subsequently, we discuss the role of Dzyaloshinskii–Moriya interaction in generating this magnetoelectric response. This work is particularly relevant for such relaxor systems where the material-dependent parameters would be affected by changes in, e.g., chemical doping or cooling rate.

AB - The recent discovery of relaxor ferroelectricity and magnetoelectric effect in lightly doped cuprate material La2CuO4+x has provided a number of questions concerning its theoretical description. Using a Ginzburg–Landau free energy approach, it has been argued that the magnetoelectric effect can be explained by bi-quadratic interaction terms in the free energy. Here, by using the same free energy functional, we study the variety of behavior which can emerge in the electric polarization under an external magnetic field. Subsequently, we discuss the role of Dzyaloshinskii–Moriya interaction in generating this magnetoelectric response. This work is particularly relevant for such relaxor systems where the material-dependent parameters would be affected by changes in, e.g., chemical doping or cooling rate.

U2 - 10.1007/s10948-012-2059-2

DO - 10.1007/s10948-012-2059-2

M3 - Journal article

SN - 1557-1939

VL - 26

SP - 1649

EP - 1652

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

IS - 5

ER -

Bi-quadratic magnetoelectric coupling in underdoped La2CuO4+x

Abstract

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Bi-quadratic magnetoelectric coupling in underdoped La₂CuO_4+x