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Research on a new type of exotic binary star, in which a rapidly-spinning white dwarf sweeps powerful beams of particles and radiation over its nearby companion star, causing it to pulse across almost the entire electromagnetic spectrum from the ultraviolet to radio, is published in the journal .

We design spin filters for particles with potentially arbitrary spin S (=1/2, 1, 3/2, ...) using a one-dimensional periodic chain of magnetic atoms as a quantum device. Describing the system within a tight-binding formalism we present an analytical method to unravel the analogy between a one-dimensional magnetic chain and a multi-strand ladder network. Our scheme is applicable to ultracold quantum gases, and might inspire future experiments in this direction.

Graphene’s flat, homogeneous surface can encourage the growth of large organic semiconducting crystals without relying on epitaxy: a promising development for its application as an electrode material.

The solar wind flows away from the Sun, depositing energy into the magnetosphere as it reaches Earth. Here we explore various ways of quantifying this energy and its variation over the last 20 years.