Optical Tellegen metamaterial with spontaneous magnetization

Shadi Safaei Jazi, Ihar Faniayeu, Rafael Cichelero, Dimitrios C. Tzarouchis, Mohammad Mahdi Asgari, Alexandre Dmitriev, Shanhui Fan, Viktar Asadchy*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

2 Lataukset (Pure)

Abstrakti

The nonreciprocal magnetoelectric effect, also known as the Tellegen effect, promises a number of groundbreaking phenomena connected to fundamental (e.g., electrodynamics of axion and relativistic matter) and applied physics (e.g., magnetless isolators). We propose a three-dimensional metamaterial with an isotropic and resonant Tellegen response in the visible frequency range. The metamaterial is formed by randomly oriented bi-material nanocylinders in a host medium. Each nanocylinder consists of a ferromagnet in a single-domain magnetic state and a high-permittivity dielectric operating near the magnetic Mie-type resonance. The proposed metamaterial requires no external magnetic bias and operates on the spontaneous magnetization of the nanocylinders. By leveraging the emerging magnetic Weyl semimetals, we further show how a giant bulk effective magnetoelectric effect can be achieved in a proposed metamaterial, exceeding that of natural materials by almost four orders of magnitude.

AlkuperäiskieliEnglanti
Artikkeli1293
JulkaisuNature Communications
Vuosikerta15
Numero1
DOI - pysyväislinkit
TilaJulkaistu - jouluk. 2024
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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