App note on how to acquire and analyze quantum Hall effect data

The study of quantum transport in nanomaterials has become a large and exciting field due to the unique properties that arise from quantum mechanical effects. Using experimental variables such as temperature, field-effect gates, or magnetic fields, one can tune the properties of quantum materials through a wide range of behaviors, and many of these properties can be identified and characterized using the quantum Hall effect (QHE) measurement technique.

LakeShore_QHE-Nanomaterials-App-NoteIn this new app note, we describe the fundamentals of acquiring and analyzing QHE data, such as a Landau fan, using a bilayer graphene (BLG) sample as a platform, while also demonstrating the ease of performing QHE measurements using our M81-SSM synchronous source measure system.

We cover step by step how this is done by:

  • Wiring the instrumentation to a multi-gated Hall bar device for measurement in a cryostat
  • Converting gate voltage to carrier density
  • Extracting energy states degeneracies
  • Extracting Hall, field effect, and quantum mobilities

Download the App Note

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Tags: nanoscale materials, M81 synchronous source measure system, Quantum Hall Effect, BLG

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