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Period21 Jul 2016 → 22 Jul 2016

Associated person


TitleNanotubes help engineer attractive electrons
Degree of recognitionInternational
Media name/
Media typeWeb
DescriptionElectrons normally repel each other. This basic property may change, however, in certain solids such as superconductors, in which electrons coupled to lattice vibrations (or phonons) attract each other, forming bound pairs that then travel freely together through the material. Now, researchers in Israel, Germany, the US and Denmark have observed another type of “excitonic” electron attraction that does not involve phonons but actual repulsion between electrons. This mechanism, first predicted 50 years ago, but never yet seen in a laboratory experiment, could help make stronger and more exotic superconductors and be used to study the fundamental physical properties of these structures.
Producer/AuthorBelle Dumé
PersonsKristen Kaasbjerg
TitleCondensed-matter physics: Attractive electrons from nanoengineering
Degree of recognitionInternational
Media name/outletNature
Media typePrint
DescriptionElectrons repel each other because they are negatively charged. An experiment now confirms a fifty-year-old theory that electrons can also attract one another as a result of repulsion from other electrons.
Producer/AuthorTakis Kontos
PersonsKristen Kaasbjerg
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