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We study the phenomenon of spontaneous symmetry breaking in dissipationless resonant tunneling structures (RTS). To describe the quantum transport in this system we apply both the nonequilibrium Green function formalism based on a tight-binding model and a numerical solution of the Schrödinger equation within the envelope wavefunction formalism. An auxiliary non-Hermitian Hamiltonian is introduced...
Quasi-two-dimensional (2D) simulation of resonant-tunneling diode is presented. 2D effects are studied both analytically and numerically. For numerical simulation, the local resonant-tunneling layer (RTL) model is implemented in 2D drift-diffusion simulator as the boundary condition for the current. It is shown that the increase of linear size of the device results in the strong decrease of peak current...
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