quantum Hall effect

[′kwän·təm ′hȯl i‚fekt]

(electronics)

A phenomenon exhibited by certain semiconductor devices at low temperatures and high magnetic fields, whereby the Hall resistance becomes precisely equal to (h / e ²)/ n, where h is Planck's constant, e is the electronic charge, and n is either an integer or a rational fraction. Also known as von Klitzing effect.

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References in periodicals archive

Zhang et al., "Room-temperature quantum hall effect in graphene," Science, vol.

Weak localization in graphene: theory, simulations, and experiments

Wybourne, Powers of the Vandermonde determinant and the quantum Hall effect, J.

Macdonald polynomials at t = [q.sup.k]

Although remarkable progress has been made [19-22], a complete theory of the quantum Hall effect is still missing.

Temperature dependence of the Hall and longitudinal resistances in a quantum Hall resistance standard

Peres, "Edge and surface states in the quantum Hall effect in graphene," Physical Review B, vol.

Relativistic fermion on a ring: energy spectrum and persistent current

Coverage here encompasses the history of Si, MEMS, and NEMS, followed by discussion of crystallography, quantum mechanics, the band theory of solids, the silicon single crystal, photonics, the quantum hall effect, and superconductivity.

Solid-state physics, fluidics, and analytical techniques in micro- and nanotechnology, 3d ed

The international standard for electrical resistance is provided by the Quantum Hall Effect, a phenomenon whereby electrical properties in 2D materials can be determined based only on fundamental constants of nature.

Breakthrough in developing graphene may lead to high-speed electronics in future

Placing graphene samples in magnetic fields whose intensities the researchers ratcheted up, they saw the electrical resistance increasing in discrete steps, a phenomenon known as the quantum Hall effect. Around the same time, a group led by Philip Kim of Columbia University made the same discovery after learning of Geim's tape-peeling technique.

Electron superhighway: can graphene overtake silicon as the essential ingredient of computer chips?

Keywords: ac quantum Hall effect; dc quantum Hall effect; frequency dependences; multifrequency bridge; quadruple-series connections; single-series connections.

Initial NIST AC QHR measurements