Dynamic electromagnonic crystal based on artificial multiferroic heterostructure

Abstract

One of the main challenges for the modern magnonics, which, as opposed to the conventional electronics, operates with quanta of spin waves in magnetically ordered materials-magnonsis energy efficient control of magnon transport on small time and space scales. The magnon propagation in a time-dependent periodic spatial potentials-dynamic magnonic crystalspaves a way to this aim. To date, dynamic manipulation of the magnonic crystals has been realized with electric current and optic control influence. However, both approaches show limited potential for reduction in energy consumption and miniaturization of magnonic circuits. Voltage (or electric field) control of magnon currents promises to be fast and low energy consuming. It can be achieved in ferrite-ferroelectric (multiferroic) heterostructures, where strong coupling of magnons and microwave photons constitutes new quasiparticles called electromagnons. Here, we present an experimental realization of a voltage-controlled dynamic electromagnonic crystal operating with electromagnons at microwave frequencies.

Electromagnonic crystals based on ferrite–ferroelectric–ferrite multilayers

“…4 a ). The first and the second waveguiding structures are discussed in detail [5–14, 34–38] while the third one was not investigated. The experimental and theoretical investigations of transmission characteristics of the third waveguiding structure validate the mechanism of the band structure formation when compared with other structures.…”

“…By analogy to natural multiferroic solids, the quanta of these waves are considered as electro‐active magnons or electromagnons. The multiferroic periodical structures, called electromagnonic crystals (EMCs), demonstrate the electrically and magnetically tunable band gaps, where propagation of the electromagnons is forbidden [13, 14, 34–38].…”

“…Advantages of the multiferroic periodic waveguides in comparison with conventional MCs are due to their tunability through an application of the electric field to a ferroelectric layer. Thus, a dynamic EMC demonstrating a voltage‐controlled depth of the stop bands has been realised recently [38]. Promising functionalities of this crystal arise from the desired band structure, which originate from a spatial variation of dielectric permittivity of periodically poled regions of a ferroelectric slab by an application of a local electric field.…”

Quantum Spin-Wave Materials, Interface Effects and Functional Devices for Information Applications

“…Magnonic crystals are formed by periodically adjusting material parameters, see, e.g., Ciubotaru et al, (2013), Obry et al 2013, Banerjee et al (2017), and Richardson et al (2018) or external fields, see, e.g., Chumak et al (2009) and Ustinov et al (2019). As an artificial magnetic crystal, magnonic crystals are an important component of spin-wave devices.…”

Магнетосопротивление и ИК-спектр примесных состояний в пленке Ce-=SUB=-3-=/SUB=-Fe-=SUB=-5-=/SUB=-O-=SUB=-12-=/SUB=-

“…Пленки феррит-гранатов с редкоземельными катионами обладают потенциальной возможностью использования в магнитооптике [1][2][3], в том числе магнитоплазмонной фотонике [4], для изготовления магнонных кристаллов [5]. Поликристаллические пленки уступают по характеристикам своим объемным аналогам, но они обнаруживают устойчивость к процессам формирования структур микроэлектроники на их основе.…”