Electric field control of natural optical activity in a multiferroic helimagnet

Controlling the chiral degree of freedom in matter has long been an important issue for many fields of science. The spin-spiral order, which exhibits a strong magnetoelectric coupling, gives rise to chirality irrespective of the atomic arrangement of matter. Here, we report the resonantly enhanced natural optical activity on the electrically active magnetic excitation, that is, electromagnon, in multiferroic cupric oxide. The electric field control of the natural optical activity is demonstrated through magnetically induced chirality endowed with magnetoelectric coupling. These optical properties inherent to multiferroics may lead to optical devices based on the control of chirality.

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Electric field control of the optical properties in magnetic mixed-valence molecules

Chemical Science ◽

10.1039/c4sc01056f ◽

2014 ◽

Vol 5 (9) ◽

pp. 3598-3602 ◽

Cited By ~ 15

Author(s):

Andrew Palii ◽

Juan M. Clemente-Juan ◽

Boris Tsukerblat ◽

Eugenio Coronado

Keyword(s):

Optical Properties ◽

Electric Field ◽

Strong Influence ◽

Spin Crossover ◽

Mixed Valence ◽

Field Control

In delocalized magnetic mixed-valence molecules the spin-crossover induced by an electric field may have a strong influence on their optical properties.

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Strain and electric-field control of magnetism in supercrystalline iron oxide nanoparticle–BaTiO3 composites

Nanoscale ◽

10.1039/c7nr05097f ◽

2017 ◽

Vol 9 (35) ◽

pp. 12957-12962 ◽

Cited By ~ 8

Author(s):

L.-M. Wang ◽

O. Petracic ◽

E. Kentzinger ◽

U. Rücker ◽

M. Schmitz ◽

...

Keyword(s):

Iron Oxide ◽

Electric Field ◽

Magnetic Nanoparticle ◽

Magnetoelectric Coupling ◽

Iron Oxide Nanoparticle ◽

Field Control ◽

Oxide Nanoparticle ◽

Electric Field Induced Strain

Magnetic nanoparticle monolayers on ferroelectric BTO substrates were fabricated. Thermal and electric field induced strain-mediated magnetoelectric coupling was observed.

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Electric Field Control of Fe Nano Magnets: Magnetoelectric Coupling at Metal Surfaces

Hyomen Kagaku ◽

10.1380/jsssj.32.361 ◽

2011 ◽

Vol 32 (6) ◽

pp. 361-367

Author(s):

Toyokazu YAMADA

Keyword(s):

Electric Field ◽

Metal Surfaces ◽

Magnetoelectric Coupling ◽

Field Control

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Understanding the electric field control of the electronic and optical properties of strongly-coupled multi-layered quantum dot molecules

Nanoscale ◽

10.1039/c5nr04710b ◽

2015 ◽

Vol 7 (39) ◽

pp. 16516-16529 ◽

Cited By ~ 7

Author(s):

Muhammad Usman

Keyword(s):

Optical Properties ◽

Quantum Dot ◽

Electric Field ◽

Strongly Coupled ◽

Electronic And Optical Properties ◽

Quantum Dot Molecules ◽

Field Control ◽

Atomic States

An electric field transforms molecular states to atomic states.

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Discovery of Enhanced Magnetoelectric Coupling through Electric Field Control of Two-Magnon Scattering within Distorted Nanostructures

ACS Nano ◽

10.1021/acsnano.7b04653 ◽

2017 ◽

Vol 11 (9) ◽

pp. 9286-9293 ◽

Cited By ~ 24

Author(s):

Xu Xue ◽

Ziyao Zhou ◽

Guohua Dong ◽

Mengmeng Feng ◽

Yijun Zhang ◽

...

Keyword(s):

Electric Field ◽

Magnetoelectric Coupling ◽

Field Control

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Electric-field control of skyrmions in multiferroic heterostructure via magnetoelectric coupling

Nature Communications ◽

10.1038/s41467-020-20528-y ◽

2021 ◽

Vol 12 (1) ◽

Cited By ~ 1

Author(s):

You Ba ◽

Shihao Zhuang ◽

Yike Zhang ◽

Yutong Wang ◽

Yang Gao ◽

...

Keyword(s):

Electric Field ◽

Magnetic Anisotropy ◽

Electric Fields ◽

Perpendicular Magnetic Anisotropy ◽

Magnetic Multilayers ◽

Magnetoelectric Coupling ◽

Field Control ◽

Multiferroic Heterostructures ◽

Induced Changes ◽

Moriya Interaction

AbstractRoom-temperature skyrmions in magnetic multilayers are considered to be promising candidates for the next-generation spintronic devices. Several approaches have been developed to control skyrmions, but they either cause significant heat dissipation or require ultrahigh electric fields near the breakdown threshold. Here, we demonstrate electric-field control of skyrmions through strain-mediated magnetoelectric coupling in ferromagnetic/ferroelectric multiferroic heterostructures. We show the process of non-volatile creation of multiple skyrmions, reversible deformation and annihilation of a single skyrmion by performing magnetic force microscopy with in situ electric fields. Strain-induced changes in perpendicular magnetic anisotropy and interfacial Dzyaloshinskii–Moriya interaction strength are characterized experimentally. These experimental results, together with micromagnetic simulations, demonstrate that strain-mediated magnetoelectric coupling (via strain-induced changes in both the perpendicular magnetic anisotropy and interfacial Dzyaloshinskii–Moriya interaction is responsible for the observed electric-field control of skyrmions. Our work provides a platform to investigate electric-field control of skyrmions in multiferroic heterostructures and paves the way towards more energy-efficient skyrmion-based spintronics.

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