Essay: Quantum Hall Effect and the New International System of Units

Klaus von Klitzing
Phys. Rev. Lett. 122, 200001 – Published 20 May 2019

Abstract

On 20 May 2019 the International System of Units will switch over to a new, globally accepted set of definitions based on constants of nature. The quantum Hall effect, discovered 39 years ago, plays an essential role in this development and will now contribute to a new definition of the kilogram. Ironically, the title of publication in Physical Review Letters that introduced the quantum Hall effect is, in hindsight, inaccurate in view of the revised units [K. von Klitzing, G. Dorda, and M. Pepper, New Method for High-Accuracy Determination of the Fine-Structure Constant Based on Quantized Hall Resistance, Phys. Rev. Lett. 45, 494 (1980)].

  • Figure
  • Received 18 March 2019

DOI:https://doi.org/10.1103/PhysRevLett.122.200001

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsGeneral PhysicsInterdisciplinary Physics

Authors & Affiliations

Klaus von Klitzing

  • Max Planck Institut für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany

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Issue

Vol. 122, Iss. 20 — 24 May 2019

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