News tagged with electronic behavior

Blocking infinity in a topological insulator

(—In bulk, topological insulators (TIs) are good insulators, but on their surface they act as metals, with a twist: the spin and direction of electrons moving across the surface of a TI are locked together. TIs ...

dateFeb 08, 2013 in Nanomaterials
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One material, two types of magnetism

When placed next to a bar magnet, an aluminum ball draws gently towards the magnet. In contrast, a ball made of silver moves out of the magnetic field. The mechanisms underlying these different behaviors are known as paramagnetism ...

dateNov 22, 2012 in General Physics
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