Browse Physics

Researchers predict that Majorana fermions can be found in magnetic field vortices in the bulk of the superconductor ${\text{Cu}}_x{\text{Bi}}_2{\text{Se}}_3$.

Researchers use a laser pulse to manipulate excitons confined in quantum dots.

More compact transistors may be possible by harnessing the quantum properties of semiconductor heterostructures.

In nanowire form, semiconductor lasers that rely on the coherent scattering of polaritons produce light with less energy.

Protected surface states of topological insulators could be exploited to enhance surface reaction dynamics.

Rapid frequency variations in the photons generated by a quantum dot pose difficulties for practical applications of new quantum dot materials.

Creating a temperature difference in an arrangement of semiconductors generates a circulating current and a magnetic field, according to simulations. The effect may account for some inefficiency in electronic devices.

Measurement of the Coulomb drag correlation in a two-dimensional electron gas provides a quantitative explanation for the movement of electron-hole packets opposite to the expected direction.

Researchers develop models that could exhibit a fractional quantum Hall effect in the absence of an external magnetic field.

An ingenious experiment has probed the collective response of the quantum Hall stripe phase.

Alternating voltages act as a conveyer belt for transporting excitons.

In transistor circuits, preventing logical errors with physical fault tolerance is more efficient than correcting errors with a fault-tolerant architecture.

Mercury telluride—a semimetal in bulk—shows signs of becoming a topological insulator under strain.

Semiconductor alloys offer one way to improve the efficiency of solar cells.

Two objects made of the exotic materials known as topological insulators could repel one another through the quantum-mechanical forces that cause most other solids to attract, theorists predict.

A new topological insulator that approaches true insulating behavior in the bulk is synthesized.

New measurements of silicon nanostructures cast doubt on the possibility that they support a giant piezoresistive effect.

The potential discovery of anyons in a fractional quantum Hall device tests the limits of what is known about particles confined to two dimensions.

Dopant impurities may adversely affect the coherence of quantum bits in even highly purified silicon wafers.

Measuring the quantized magnetoelectric response in topological insulators could help establish precise values for basic physical constants.