QuantumATK Forum

QuantumATK => General Questions and Answers => Topic started by: physics on November 12, 2024, 16:24

Title: Current or current density
Post by: physics 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.

Title: Re: Current or current density
Post by: Jahanzaib 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.

Title: Re: Current or current density
Post by: physics on November 14, 2024, 08:26

Thank you for your reply.