Thin-Film Electron Interferometers

Iogansen, L. V.

doi:10.1070/pu1965v008n03abeh003052

Cited by 23 publications

(23 citation statements)

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“…Earlier studies on benzene include the experimental analysis of Schultz and co-workers, 3,6,9 the further experimental work on resonances done in later years [10][11][12][13][14][15][16] using electron scattering measurements of vibrational excitations, and scattering experiments involving electronic excitations. [17][18][19] Total integral cross sections over a broad range of energies were also measured recently.…”

Section: Introductionmentioning

confidence: 99%

One-electron resonances and computed cross sections in electron scattering from the benzene molecule

Gianturco¹,

Lucchese

1998

The Journal of Chemical Physics

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One-electron resonances arising in electron scattering processes from a nonlinear polyatomic target, the benzene molecule, have been examined using various related methods. First, we have carried out calculations over a broad range of collision energies ͑from about 0.001 eV up to about 30 eV͒ by solving the scattering equations which use a parameter-free exact-static-exchangeplus-correlation-polarization potential to treat the electron-molecule interaction in all scattering symmetries. The entire range of features produced by the calculations was then related to specific structural properties of the scattering functions which give rise to the resonances. This analysis was done by using wave functions obtained with a local model potential approximation to the full potential used in the scattering calculations. These scattering functions were also related to the virtual orbitals obtained from a minimum basis set self-consistent field calculation. Additionally, for each resonant state found in this study we related the energy and width of the resonance to the partial wave components of the nearly adiabatic potential energy curve of the appropriate symmetry generated from the local model potential.

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Section: Introductionmentioning

confidence: 99%

One-electron resonances and computed cross sections in electron scattering from the benzene molecule

Gianturco¹,

Lucchese

1998

The Journal of Chemical Physics

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“…Particularly, negative differential resistance (NDR) is essential for many applications [5][6][7][8] . In semiconductor resonant tunneling diodes [9][10][11] and superlattice structures 12,13 , NDR is based on Fabry-Pérot type interferences arising from the impedance mismatch between the various layers. These semiconductor NDR systems can also show interesting phenomena, such as intrinsic bistability due to charge accumulation 14 .…”

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confidence: 99%

Low-bias negative differential resistance in graphene nanoribbon superlattices

et al. 2011

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We theoretically investigate negative differential resistance (NDR) for ballistic transport in semiconducting armchair graphene nanoribbon (aGNR) superlattices (5 to 20 barriers) at low bias voltages VSD < 500 mV. We combine the graphene Dirac hamiltonian with the Landauer-Büttiker formalism to calculate the current ISD through the system. We find three distinct transport regimes in which NDR occurs: (i) a "classical" regime for wide layers, through which the transport across bandgaps is strongly suppressed, leading to alternating regions of nearly unity and zero transmission probabilities as a function of VSD due to crossing of bandgaps from different layers. (ii) a quantum regime dominated by superlattice miniband conduction, with current suppression arising from the misalignment of miniband states with increasing VSD; and (iii) a Wannier-Stark ladder regime with current peaks occurring at the crossings of Wannier-Stark rungs from distinct ladders. We observe NDR at voltage biases as low as 10 mV with a high current density, making the aGNR superlattices attractive for device applications.

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“…The first detailed theoretical description of prism couplers was published by Iogansen (2). Harris and Shubert (3) and Tien et al (4) demonstrated them experimentally in 1969.…”

Section: Ftr Coupling: a Qualitative Descriptionmentioning

confidence: 99%

Distributed Coupling in Slab Waveguides

Kapany

1972

Optical Waveguides

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Thin-Film Electron Interferometers

Cited by 23 publications

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One-electron resonances and computed cross sections in electron scattering from the benzene molecule

One-electron resonances and computed cross sections in electron scattering from the benzene molecule

Low-bias negative differential resistance in graphene nanoribbon superlattices

Distributed Coupling in Slab Waveguides

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