Resonant tunneling in a pulsed phonon field

Resonant tunneling in a pulsed phonon field

Hot-phonon-assisted resonant tunneling in a quantum well

We theoretically investigate dc electron resonant tunneling through an impurity state in a quantum well assisted by hot acoustical phonons. Numerical results for the tunneling current, obtained by nonequilibrium Green functions, reflect the hot-phonon-induced change in the spectrum and population of the impurity state. The induced change of the I-V characteristics has a typical two-peak form, w...

Rate equations for the phonon peak in resonant-tunneling structures.

The ratio of the phonon peak current to the main peak current in double-barrier resonant-tunneling structures is significantly enhanced by barrier asymmetry. Previously, using the Keldysh formalism, we derived analytical expressions, valid in the zero-temperature, high-bias regime, which explained this eftect. We now provide analytical expressions valid for finite temperature and bias obtained ...

Phonon-assisted resonant tunneling through a triple-quantum- dot: a phonon-signal detector

– We study the effect of electron-phonon interaction on current and zero-frequency shot noise in resonant tunneling through a series triple-quantum-dot coupling to a local phonon mode by means of a nonperturbative mapping technique along with the Green function formulation. By fixing the energy difference between the first two quantum dots to be equal to phonon frequency and sweeping the level ...

No resonant tunneling in quantum field theory

We investigate the nature of resonant tunneling in Quantum Field Theory. Following the pioneering work of Banks, Bender and Wu we describe quantum field theory in terms of infinite dimensional quantum mechanics and utilize the “Most probable escape path” (MPEP) as the class of paths which dominate the path integral in the classically forbidden region. Considering a 1+1 dimensional field theory ...