Browse Physics

The ability to detect the spin Hall effect electrically could make an obscure but intriguing effect more accessible to research.

Fractional quantum Hall effect is observed in a new system, a CdTe quantum well with strong intrinsic Zeeman energy.

Analog of gravitational lensing on the surface of a topological insulator.

Theorists and experimentalists have long been trying to explain the existence of a fractional quantum Hall effect where it is not expected.

Photoemission measurements challenge the picture that the electronic states on the surface of the topological insulator Bi2Se3 form a perfect Dirac cone.

The combination of stress and corrosion that can prove deadly in bridges and other structures also allows silicon to be sliced with the nanometer-scale precision required for the latest computer chips, according to simulations.

The first experimental observation of Landau levels in the surface states of a three-dimensional topological insulator confirms the levels obey unconventional quantization rules.

The exactly quantized magneto-optical response of a topological insulator is a direct result of the Berry phase protected states on its surface.

A little-known and subtle optical effect in combination with state-of-the-art pulsed laser techniques holds considerable promise as a sensitive way to study physical properties (including spin phenomena) in nanometer scale structures.

Nuclear spins may enable enhanced control of electron spins in quantum information devices.

The phase coherence time of electrons in certain nanostructures may diverge at very low temperatures.

By doping the topological insulator Bi2Te3 with magnetic manganese, researchers have turned it into a dilute ferromagnetic semiconductor.

Microwave illumination of a high-mobility two-dimensional electron gas reveals quantum magneto-oscillations in both absorption coefficient and dc resistance.

Ever present fluctuations in semiconductors can be utilized as a demolition-free spectroscopic probe to study ultrafast spin dynamics.

The race for realizing Majorana fermions—elusive particles that act as their own antiparticles—heats up, but we still await ideal materials to work with.

The combination of trivial and topological band insulators with a superconductor is bringing anyons—particles that behave neither according to purely Bose nor Fermi statistics—into the three-dimensional world.

The energy-momentum relationship of electrons on the surface of an ideal topological insulator forms a cone, which, when warped, can lead to unusual phenomena such as enhanced interference around defects and a magnetically ordered exotic surface.

A theoretical analysis of recent experiments suggests that a key feature of a topological quantum computer—the unusual statistics of quasiparticles in the quantum Hall effect—may finally have been observed.

A new generation of electron microscopes that correct for spherical aberration may be able to chart the positions of individual atoms as they diffuse through a crystal.

By exploiting the concept of particle-hole duality, one can realize a point junction between integer and fractional quantum Hall phases, which constitutes a crucial building block towards possible applications of the quantum Hall effect.