Deep-subwavelength magnetic-coupling-dominant interaction among magnetic localized surface plasmons
Magnetic coupling is generally much weaker than electric Coulomb interaction. This also applies to the well-known magnetic “meta-atoms,” or split-ring resonators (SRRs) as originally proposed by Pendry et al. [IEEE Trans. Microwave Theory Tech. 47, 2075 (1999)], in which the associated electric dipo...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2017
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| Online Access: | https://hdl.handle.net/10356/84056 http://hdl.handle.net/10220/42931 |
| _version_ | 1826120606335107072 |
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| author | Gao, Zhen Gao, Fei Zhang, Youming Zhang, Baile |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Gao, Zhen Gao, Fei Zhang, Youming Zhang, Baile |
| author_sort | Gao, Zhen |
| collection | NTU |
| description | Magnetic coupling is generally much weaker than electric Coulomb interaction. This also applies to the well-known magnetic “meta-atoms,” or split-ring resonators (SRRs) as originally proposed by Pendry et al. [IEEE Trans. Microwave Theory Tech. 47, 2075 (1999)], in which the associated electric dipole moments usually dictate their interaction. As a result, stereometamaterials, a stack of identical SRRs, were found with electric coupling so strong that the dispersion from merely magnetic coupling was overturned. Recently, other workers have proposed a new concept of magnetic localized surface plasmons, supported on metallic spiral structures (MSSs) at a deep-subwavelength scale. Here, we experimentally demonstrate that a stack of these magnetic “meta-atoms” can have dominant magnetic coupling in both of its two configurations. This allows magnetic-coupling-dominant energy transport along a one-dimensional stack of MSSs, as demonstrated with near-field transmission measurement. Our work not only applies this type of magnetic “meta-atom” into metamaterial construction, but also provides possibilities of magnetic metamaterial design in which the electric interaction no longer takes precedence. |
| first_indexed | 2024-10-01T05:19:12Z |
| format | Journal Article |
| id | ntu-10356/84056 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:19:12Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/840562023-02-28T19:41:03Z Deep-subwavelength magnetic-coupling-dominant interaction among magnetic localized surface plasmons Gao, Zhen Gao, Fei Zhang, Youming Zhang, Baile School of Physical and Mathematical Sciences Plasmons Electromagnetism Magnetic coupling is generally much weaker than electric Coulomb interaction. This also applies to the well-known magnetic “meta-atoms,” or split-ring resonators (SRRs) as originally proposed by Pendry et al. [IEEE Trans. Microwave Theory Tech. 47, 2075 (1999)], in which the associated electric dipole moments usually dictate their interaction. As a result, stereometamaterials, a stack of identical SRRs, were found with electric coupling so strong that the dispersion from merely magnetic coupling was overturned. Recently, other workers have proposed a new concept of magnetic localized surface plasmons, supported on metallic spiral structures (MSSs) at a deep-subwavelength scale. Here, we experimentally demonstrate that a stack of these magnetic “meta-atoms” can have dominant magnetic coupling in both of its two configurations. This allows magnetic-coupling-dominant energy transport along a one-dimensional stack of MSSs, as demonstrated with near-field transmission measurement. Our work not only applies this type of magnetic “meta-atom” into metamaterial construction, but also provides possibilities of magnetic metamaterial design in which the electric interaction no longer takes precedence. MOE (Min. of Education, S’pore) Published version 2017-07-19T04:36:28Z 2019-12-06T15:37:24Z 2017-07-19T04:36:28Z 2019-12-06T15:37:24Z 2016 Journal Article Gao, Z., Gao, F., Zhang, Y., & Zhang, B. (2016). Deep-subwavelength magnetic-coupling-dominant interaction among magnetic localized surface plasmons. Physical Review B, 93(19), 195410-. 2469-9950 https://hdl.handle.net/10356/84056 http://hdl.handle.net/10220/42931 10.1103/PhysRevB.93.195410 en Physical Review B © 2016 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: [http://dx.doi.org/10.1103/PhysRevB.93.195410]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 6 p. application/pdf |
| spellingShingle | Plasmons Electromagnetism Gao, Zhen Gao, Fei Zhang, Youming Zhang, Baile Deep-subwavelength magnetic-coupling-dominant interaction among magnetic localized surface plasmons |
| title | Deep-subwavelength magnetic-coupling-dominant interaction among magnetic localized surface plasmons |
| title_full | Deep-subwavelength magnetic-coupling-dominant interaction among magnetic localized surface plasmons |
| title_fullStr | Deep-subwavelength magnetic-coupling-dominant interaction among magnetic localized surface plasmons |
| title_full_unstemmed | Deep-subwavelength magnetic-coupling-dominant interaction among magnetic localized surface plasmons |
| title_short | Deep-subwavelength magnetic-coupling-dominant interaction among magnetic localized surface plasmons |
| title_sort | deep subwavelength magnetic coupling dominant interaction among magnetic localized surface plasmons |
| topic | Plasmons Electromagnetism |
| url | https://hdl.handle.net/10356/84056 http://hdl.handle.net/10220/42931 |
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