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| Naji, M. |
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| Mohamed, Tarek |
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| Bih, L. |
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| Kočí, Jan | Prague |
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| Azam, Siraj |
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| Azevedo, Nuno Monteiro |
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Hillenbrand, Rainer
Ikerbasque
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Publications (9/9 displayed)
- 2024snompy: a package for modelling scattering-type scanning near-field optical microscopycitations
- 2023Probing optical anapoles with fast electron beamscitations
- 2022Phonon-Enhanced Mid-Infrared CO2 Gas Sensing Using Boron Nitride Nanoresonatorscitations
- 2022Tailoring photoluminescence by strain-engineering in layered perovskite flakescitations
- 2021Plasmonic Metasurface Resonators to Enhance Terahertz Magnetic Fields for High‐Frequency Electron Paramagnetic Resonancecitations
- 2018Vibrational electron energy loss spectroscopy in truncated dielectric slabscitations
- 2018Surface-enhanced molecular electron energy loss spectroscopycitations
- 2017Probing low-energy hyperbolic polaritons in van der Waals crystals with an electron microscope
- 2016An Alternative Approach for the Incorporation of Cellulose Nanocrystals in Flexible Polyurethane Foams Based On Renewably Sourced Polyolscitations
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article
Plasmonic Metasurface Resonators to Enhance Terahertz Magnetic Fields for High‐Frequency Electron Paramagnetic Resonance
Abstract
<jats:title>Abstract</jats:title><jats:p>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.</jats:p>