Actively tunable metamaterial resonators based on colossal magnetoresistance in the infrared regime

Cheng Wang; Changchun Yan; Jiebing Tian; Ying Han; Rongyuan Zou; Dongdong Li; Daohua Zhang

doi:10.3788/COL201513.051601

Journals >Chinese Optics Letters >Volume 13 >Issue 5 >Page 051601 > Article

Chinese Optics Letters
Vol. 13, Issue 5, 051601 (2015)

Actively tunable metamaterial resonators based on colossal magnetoresistance in the infrared regime

Cheng Wang¹, Changchun Yan^1、*, Jiebing Tian¹, Ying Han¹, Rongyuan Zou¹, Dongdong Li¹, and Daohua Zhang²

Author Affiliations

¹Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China

²School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore

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DOI: 10.3788/COL201513.051601 Cite this Article Set citation alerts

Cheng Wang, Changchun Yan, Jiebing Tian, Ying Han, Rongyuan Zou, Dongdong Li, Daohua Zhang. Actively tunable metamaterial resonators based on colossal magnetoresistance in the infrared regime[J]. Chinese Optics Letters, 2015, 13(5): 051601 Copy Citation Text

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Abstract

We present a tunable resonator consisting of a colossal magnetoresistant cross in which a smaller gold cross is embedded. Simulations show the resonance frequencies of the resonator move into the infrared regime when there is a change in the intensity of the external magnetic field applied to the resonator. The source of the tunability is the variance in the colossal magnetoresistance in the resonator when the intensity of the magnetic field changes, which accordingly leads to a shift in the resonance frequency. Such a method offers a new way to achieve tunability, which has potential applications in controllable photoelectric elements.