Index of /eka/Quantum_Hall_Effect
Quantum Hall Effect - Instructions
Instructions!
- These videos provide a visual guide to the QHE experiment, documenting each step
of the procedure you will perform.
- You should watch all of them before you start the experiment, and then return
to individual segments as necessary to guide you. (If you don't watch them until
you are in the middle of your experiment, you may lose all your helium while you
search for a particular segment!)
- As you look through them the first time, they won't make much sense unless you
have the two manuals ("Overview" and "Step-by-Step") at your fingertips. Visit the
EKA main page to get them.
(There are also additional articles there, including background, that might be useful to you.)
- For higher quality and faster loading, these videos are also kept on a DVD next to
(or in!) the computer in the QHE room.
- A few photos are also relevant, in that they will show you a particular device in
greater detail. You will find them in the folder marked "photos".
- Before you begin collecting data, make sure you understand how Labview will
save your data runs. Each run is saved separately as a Labview data (.lvm) file,
according to the filename you entered in each case. Therefore, each new data run
must be named differently, or your data will be overwritten. Saving the VI file
will not preserve data. Also, make sure you are using the correct VI file.
An extra copy is in this folder as qhe_correct.vi.
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Last Update: 10 July 2007
David Tam, Department of Physics, Columbia University
tam@phys.columbia.edu * 212-854-3303