Can repelling electrons form bound pairs
- 15 October 2021
- journal article
- research article
- Published by IOP Publishing in European Journal of Physics
- Vol. 43 (1), 015403
- https://doi.org/10.1088/1361-6404/ac3062
Abstract
Electrons are elementary particles that repel each other due to their same electric charge. In certain cases however, the effect of quantum coherence in an appropriate environment may act to overcome this natural tendency making the electrons effectively behave as if there was an attraction between them, and form bound pairs that move as a unit. We discuss a simple case, where this unexpected binding is mediated by a rigid crystalline environment. The paper is addressed to students and teachers with an elementary knowledge of quantum and solid state physics.Keywords
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