Wednesday, 10 June 2020

Signatures of fractional electronic charge observed in topological insulators

Because electrons -- the subatomic particles that carry electricity -- are elementary particles and cannot be split, fractions of electronic charge are not normally encountered. Despite this, researchers have recently observed the signature of fractional charges ranging from e/4 to 2e/3 in exotic materials known as topological crystalline insulators.

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Scientists produce high-power attosecond X-ray pulses at megahertz repetition rates

A research team has achieved a major advance in X-ray science by generating unprecedented high-power attosecond hard X-ray pulses at megaher...