Publication detail

Plasmonic Metasurface Resonators to Enhance Terahertz Magnetic Fields for High-Frequency Electron Paramagnetic Resonance

TESI, L. BLOOS, D. HRTOŇ, M. BENEŠ, A. HENTSCHEL, M. KERN, M. LEAVESLEY, A. HILLENBRAND, R. KŘÁPEK, V. ŠIKOLA, T. VAN SLAGEREN, J.

Original Title

Plasmonic Metasurface Resonators to Enhance Terahertz Magnetic Fields for High-Frequency Electron Paramagnetic Resonance

Type

journal article in Web of Science

Language

English

Original Abstract

Nanoscale magnetic systems play a decisive role in areas ranging from biology to spintronics. Although, in principle, THz electron paramagnetic resonance (EPR) provides high-resolution access to their properties, lack of sensitivity has precluded realizing this potential. To resolve this issue, the principle of plasmonic enhancement of electromagnetic fields that is used in electric dipole spectroscopies with great success is exploited, and a new type of resonators for the enhancement of THz magnetic fields in a microscopic volume is proposed. A resonator composed of an array of diabolo antennas with a back-reflecting mirror is designed and fabricated. Simulations and THz EPR measurements demonstrate a 30-fold signal increase for thin film samples. This enhancement factor increases to a theoretical value of 7500 for samples confined to the active region of the antennas. These findings open the door to the elucidation of fundamental processes in nanoscale samples, including junctions in spintronic devices or biological membranes.

Keywords

2D resonators; electron paramagnetic resonance; nanostructures; plasmonic metasurfaces; self-assembled monolayers; spintronics; thin layers

Authors

TESI, L.; BLOOS, D.; HRTOŇ, M.; BENEŠ, A.; HENTSCHEL, M.; KERN, M.; LEAVESLEY, A.; HILLENBRAND, R.; KŘÁPEK, V.; ŠIKOLA, T.; VAN SLAGEREN, J.

Released

15. 9. 2021

Publisher

Wiley-VCH

Location

WEINHEIM

ISBN

2366-9608

Periodical

Small Methods

Year of study

5

Number

9

State

Federal Republic of Germany

Pages from

2100376

Pages to

2100376

Pages count

9

URL

https://onlinelibrary.wiley.com/doi/10.1002/smtd.202100376

Full text in the Digital Library

http://hdl.handle.net/11012/203066

BibTex

@article{BUT173117,
  author="Lorenzo {Tesi} and Dominik {Bloos} and Martin {Hrtoň} and Adam {Beneš} and Mario {Hentschel} and Michal {Kern} and Alisa {Leavesley} and Rainer {Hillenbrand} and Vlastimil {Křápek} and Tomáš {Šikola} and Joris {van Slageren}",
  title="Plasmonic Metasurface Resonators to Enhance Terahertz Magnetic Fields for High-Frequency Electron Paramagnetic Resonance",
  journal="Small Methods",
  year="2021",
  volume="5",
  number="9",
  pages="2100376--2100376",
  doi="10.1002/smtd.202100376",
  issn="2366-9608",
  url="https://onlinelibrary.wiley.com/doi/10.1002/smtd.202100376"
}