Transient response of a quantum wave to an instantaneous potential step switching

Details Transient response of a quantum wave to an instantaneous potential step switching Transient response of a quantum wave to an instantaneous potential step switching

2002-07-27

arxiv.org/abs/quant-ph/0207159v1

Physics

Quantum Physics

8 pages, 8 figures, Revtex4

Scientific paper

10.1088/0305-4470/35/48/311

The transient response of a stationary state of a quantum particle in a step potential to an instantaneous change in the step height (a simplified model for a sudden bias switch in an electronic semiconductor device) is solved exactly by means of a semianalytical expression. The characteristic times for the transient process up to the new stationary state are identified. A comparison is made between the exact results and an approximate method.

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