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The Elementary Charge for the Definition and Realization of the Ampere
Author(s) -
Jeckelmann Beat,
Piquemal François
Publication year - 2019
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.201800389
Subject(s) - ampere , realization (probability) , elementary charge , charge (physics) , physics , quantum tunnelling , electron , quantum hall effect , electric charge , quantum mechanics , value (mathematics) , quantum , condensed matter physics , theoretical physics , voltage , computer science , mathematics , statistics , machine learning
The elementary charge e is one of the seven defining constants in the revised International System of Units (SI). Here, the determination of the elementary charge with the highest precision is discussed, including the results of the special CODATA adjustment leading to the fixed value of e . The various options to realize the ampere and the other electrical units in the revised SI, either through the counting of electrons by using single‐electron tunneling devices or through the Josephson and quantum Hall effect, respectively, are further elucidated.