2013/01/31 by K. Bendtz, D. A. Milstead, D. Milstead +12
Biochemistry, Genetics and Molecular Biology · Earth and Planetary Sciences · Physics and Astronomy · #Earth's magnetic field #Geochemistry #Geology #Geomagnetism and Paleomagnetism Studies #Geophysical and Geoelectrical Methods #Geophysics #High-pressure geophysics and materials #Igneous rock #Magnetic field #Magnetic monopole #Magnetometer #Mantle (geology) #Physics #Quantum mechanics #Volcanic rock #Volcano #hep-ex
paper · pdf · doi:10.1103/physrevlett.110.121803
published as Phys. Rev. Lett. 110, 121803 (2013) · 6 pages with references, 1 table, 1 figure
openalex publication_date 2013/03/22 · arxiv created 2013/04/03 · arxiv updated 2013/04/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
For a broad range of values of magnetic monopole mass and charge, the abundance of monopoles trapped inside Earth would be expected to be enhanced in the mantle beneath the geomagnetic poles. A search for magnetic monopoles was conducted using the signature of an induced persistent current following the passage of igneous rock samples through a SQUID-based magnetometer. A total of 24.6 kg of rocks from various selected sites, among which 23.4 kg are mantle-derived rocks from the Arctic and Antarctic areas, was analyzed. No monopoles were found, and a 90% confidence level upper limit of 9.8 × 10(-5)/g is set on the monopole density in the search samples.