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Hall potential distribution in the quantum Hall regime in the vicinity of a potential probe contact

MPS-Authors
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Ahlswede,  E.
Scientific Facility Nanostructuring Lab (Jürgen Weis), Max Planck Institute for Solid State Research, Max Planck Society;
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons280650

Weis,  J.
Scientific Facility Nanostructuring Lab (Jürgen Weis), Max Planck Institute for Solid State Research, Max Planck Society;
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons280605

von Klitzing,  K.
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Eberl,  K.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Ahlswede, E., Weis, J., von Klitzing, K., & Eberl, K. (2002). Hall potential distribution in the quantum Hall regime in the vicinity of a potential probe contact. Physica E, 12(1-4), 165-168.


Cite as: https://hdl.handle.net/21.11116/0000-000E-EE63-7
Abstract
Scanning force microscope measurements of the Hall potential
distribution of a two-dimensional electron system (2DES) in the
quantum Hall regime reveal the presence of a partial depletion
along the border between the 2DES and the good ohmic metal
contact: incompressible strips are formed in high magnetic
fields along this border, decoupling the bulk region of the
2DES from the contact. This finding clarifies the role of
potential probe contacts in Hall bar devices and might affect
the interpretation of conductance measurements on Corbino
devices. (C) 2002 Elsevier Science B.V. All rights reserved.