Author Topic: Current or current density  (Read 1192 times)

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Offline physics

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Current or current density
« on: November 12, 2024, 16:24 »
Hello,

In Landauer–Buttiker formula for current dependent on temperature of electrodes of device, why current density is not used. Please let me know.

Offline Jahanzaib

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Re: Current or current density
« Reply #1 on: November 12, 2024, 19:57 »
The formula deals with the total current through a quantum device, where electrons are treated as wave-like entities confined to specific channels. Unlike classical transport where current density is a meaningful quantity distributed over a cross-sectional area, the concept is less useful in a quantum regime where the focus is on transmission through discrete energy levels.

For more clear concept, wait for response of @Dr Blom.

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Re: Current or current density
« Reply #2 on: November 14, 2024, 08:26 »
Thank you for your reply.