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Updated: May 18, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
Magnetically amplified tunneling of the third kind as a probe of minicharged particles
Babette Döbrich1, Holger Gies, Norman Neitz
1Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena, Jena, Germany.
Abstract:
We show that magnetic fields significantly enhance a new tunneling mechanism in quantum field theories with photons coupling to fermionic minicharged particles (MCPs). We propose a dedicated laboratory experiment of the light-shining-through-walls type that can explore a parameter regime comparable to and even beyond the best model-independent cosmological bounds. With present-day technology, such an experiment is particularly sensitive to MCPs with masses in and below the meV regime as suggested by new-physics extensions of the standard model.
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