Publication detail

Dimensional crossover of microscopic magnetic metasurfaces for magnetic field amplification

LEJEUNE, N. FOURNEAU, E. BARRERA, A. MORRIS, O. LEONARD, O. ARREGI URIBEETXEBARRIA, J. NAVAU, C. UHLÍŘ, V. BENDING, S. PALAU, A. SILHANEK, A.

Original Title

Dimensional crossover of microscopic magnetic metasurfaces for magnetic field amplification

Type

journal article in Web of Science

Language

English

Original Abstract

Transformation optics applied to low frequency magnetic systems have been recently implemented to design magnetic field concentrators and cloaks with superior performance. Although this achievement has been amply demonstrated theoretically and experimentally in bulk 3D macrostructures, the performance of these devices at low dimensions remains an open question. In this work, we numerically investigate the non-monotonic evolution of the gain of a magnetic metamaterial field concentrator as the axial dimension is progressively shrunk. In particular, we show that in planar structures, the role played by the diamagnetic components becomes negligible, whereas the paramagnetic elements increase their magnetic field channeling efficiency. This is further demonstrated experimentally by tracking the gain of superconductor-ferromagnet concentrators through the superconducting transition. Interestingly, for thicknesses where the diamagnetic petals play an important role in the concentration gain, they also help to reduce the stray field of the concentrator, thus limiting the perturbation of the external field (invisibility). Our findings establish a roadmap and set clear geometrical limits for designing low dimensional magnetic field concentrators.

Keywords

microscopic magnetic metasurfaces;

Authors

LEJEUNE, N.; FOURNEAU, E.; BARRERA, A.; MORRIS, O.; LEONARD, O.; ARREGI URIBEETXEBARRIA, J.; NAVAU, C.; UHLÍŘ, V.; BENDING, S.; PALAU, A.; SILHANEK, A.

Released

1. 7. 2024

Publisher

AIP Publishing

Location

MELVILLE

ISBN

2166-532X

Periodical

APL Materials

Year of study

12

Number

7

State

United States of America

Pages from

1

Pages to

7

Pages count

7

URL

https://pubs.aip.org/aip/apm/article/12/7/071126/3305315/Dimensional-crossover-of-microscopic-magnetic

Full text in the Digital Library

http://hdl.handle.net/11012/250083

BibTex

@article{BUT190012,
  author="Nicolas {Lejeune} and Emile {Fourneau} and Aleix {Barrera} and Oliver {Morris} and Oscar {Leonard} and Jon Ander {Arregi Uribeetxebarria} and Carles {Navau} and Vojtěch {Uhlíř} and Simon {Bending} and Anna {Palau} and Alejandro Vladimiro {Silhanek}",
  title="Dimensional crossover of microscopic magnetic metasurfaces for magnetic field amplification",
  journal="APL Materials",
  year="2024",
  volume="12",
  number="7",
  pages="7",
  doi="10.1063/5.0217500",
  issn="2166-532X",
  url="https://pubs.aip.org/aip/apm/article/12/7/071126/3305315/Dimensional-crossover-of-microscopic-magnetic"
}