Journal
PHYSICAL REVIEW LETTERS
Volume 118, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.118.091801
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Funding
- Deutsche Forschungsgemeinschaft [EXC 153]
- Alexander von Humboldt Foundation
- European Commission under ERC [339169]
- Innovative Training Network Elusives [H2020-MSCA-ITN-2015/674896]
- Ramon y Cajal Fellowship [2012-10597, FPA2015-65745-P]
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We propose a new strategy to search for dark matter axions in the mass range of 40-400 mu eV by introducing dielectric haloscopes, which consist of dielectric disks placed in a magnetic field. The changing dielectric media cause discontinuities in the axion-induced electric field, leading to the generation of propagating electromagnetic waves to satisfy the continuity requirements at the interfaces. Large-area disks with adjustable distances boost the microwave signal (10-100 GHz) to an observable level and allow one to scan over a broad axion mass range. A sensitivity to QCD axion models is conceivable with 80 disks of 1 m(2) area contained in a 10 T field.
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