Helium-4 superfluid is a fascinating substance. With properties that seemingly defy normal physics, it leaks straight through glass, bubbles up out of containers, flows around objects and even climbs up walls. As if superfluid helium-4 was not strange enough, in 1941 it was also predicted that it should contain an exotic, particle-like excitation – a quasiparticle – called a roton. After many years of trying to verify this prediction, researchers at the University of California now claim to have successfully created a roton structure in an atomic superfluid of cesium-133... Continue Reading Cesium atoms get a shake-up to create excitation in superfluid
Section: Science
Tags: Laser, Optical lattice, Quantum, superconductor, Superfluid, University of California
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from Gizmag Emerging Technology Magazine http://ift.tt/1AI1eBW
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