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<p>Using the Wigner function to simulate semiconductor processes and depicting the results graphically is leading to new insights concerning these devices. The Wigner function, which uses a formalism that correctly incorporates all the quantum mechanics inherent in a problem, is the Fourier transform of the density matrix, taken with respect to a difference variable. The tunneling problem and the simulation of the resonant tunneling diode are discussed.</p>

D. K. Ferry, N. C. Kluksdahl and A. M. Kriman, "The Role of Visualization in the Simulation of Quantum Electronic Transport in Semiconductors," in Computer, vol. 22, no. , pp. 60-66, 1989.
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