Frequency scaling of photo-induced tunneling

Cuniberti, Gianaurelio; Fechner, A.; Sassetti, Maura; Krämer, B.

doi:10.1209/epl/i1999-00115-8

Cited by 18 publications

(18 citation statements)

References 29 publications

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“…Contrary to the dc-transport case, where several theoretical works exist [318], the investigations of transport in 1D systems in the presence of ac fields are scarce. Furthermore, most of the theoretical work on ac-transport in Luttinger liquids focuses on the single barrier case [319,320,321,322]. The photoconductance of a 1D quantum dot embedded in a non-fermi liquid has been studied by Vicari et al [323] by means of the bosonization technique.…”

Section: Photon-assisted Tunneling In One-dimensional Quantum Dotsmentioning

confidence: 99%

Photon-assisted transport in semiconductor nanostructures

2004

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In this review we focus on electronic transport through semiconductor nanostructures which are driven by ac fields. Along the review we describe the available experimental information on different nanostructures, like resonant tunneling diodes, superlattices or quantum dots, together with the theoretical tools needed to describe the observed features. These theoretical tools such as, for instance, the Floquet formalism, the non-equilibrium Green's function technique or the density matrix technique, are suitable for tackling with photon-assisted transport problems where the interplay of different aspects like nonequilibrium, nonlinearity, quantum confinement or electron-electron interactions gives rise to many intriguing new phenomena. Along the review we give many examples which demonstrate the possibility of using appropriate ac fields to control/manipulate coherent quantum states in semiconductor nanostructures.

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Section: Photon-assisted Tunneling In One-dimensional Quantum Dotsmentioning

confidence: 99%

Photon-assisted transport in semiconductor nanostructures

2004

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“…So the maximum of the new branch plays an important role. The outgoing flux consists of a sequence of wave packets, created at the moments (12) in the barrier region, which propagate toward large x as classical particles. The duration of each wave packet is shorter than 1/Ω but longer than the de Broglie period of the order of /V .…”

Section: Quantum Dynamicsmentioning

confidence: 99%

Euclidean Resonance: Application to Physical and Chemical Experiments

IVLEV

2006

Int. J. Mod. Phys. B

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The phenomenon of Euclidean resonance (a strong enhancement of quantum tunneling through a nonstationary potential barrier) is applied to disintegration of atoms and molecules through tunnel barriers formed by applied constant and time-dependent electric fields. There are two different channels for such disintegration, electronic and ionic. The electronic mechanism is associated with the ionization of a molecule into an electron and a positive ion. The required frequencies are in a wide range between 100 MHZ and infrared. This mechanism may constitute a method of selective destruction of chemical bonds. The ionic mechanism consists of dissociation of a molecule into two ions. Since an ion is more massive than an electron, the necessary frequency is about 1 MHZ. This provides a theoretical possibility of a different method of isotope separation by radio frequency waves. The small sub-barrier tunneling probability of nuclear processes can be dramatically enhanced by collision with incident charged particles. Semiclassical methods of theory of complex trajectories have been applied to nuclear tunneling, and conditions for the effect have been obtained. The enhancement of α particle decay by incident proton with energy of about 0.25 MeV has been demonstrated. The general features of this process are common for other sub-barrier nuclear processes and can be applied to nuclear fission.

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“…represents the Fourier component corresponding to l = 0 of the asymptotic rate (20). From the periodicity of the external field it can be written as a superposition of the dc-rate Γ dc evaluated at integer multiples of the frequency ω [31].…”

Section: Ac-transportmentioning

confidence: 99%

“…Here, a microspic treatment of the interplay between correlation and ac-fields is crucial and can yield new information on the physics of non-Fermi liquids. In the past, ac-transport in a Luttinger liquid through a single barrier has been considered, including higher harmonics generation, frequency scaling properties and local fields corrections [29,30,31].…”

Section: Introductionmentioning

confidence: 99%