Optimization of Epitaxial Graphene Growth for Quantum Metrology

authored by
Davood Momeni Pakdehi
supervised by
Hans Werner Schumacher

The electrical quantum standards have played a decisive role in modern metrology, particularly since the introduction of the revised International System of Units (SI) in May 2019. By adapting the basic units to exactly defined natural constants, the quantized Hall resistance (QHR) standards are also given precisely. The Von Klitzing constant RK = h/e2 (h Planck's constant and e elementary charge) can be measured precisely using the quantum Hall effect (QHE) and is thus the primary representation of the ohm. Currently, the QHR standard based on GaAs/AlGaAs heterostructure has succeeded in yielding robust resistance measurements with high accuracy

Institute of Solid State Physics
QUEST-Leibniz Research School
Doctoral thesis
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Electronic version(s)
https://doi.org/10.15488/10201 (Access: Open)

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