1,992 research outputs found
Shuttle instabilities: semiclassical phase analysis
We present a semiclassical analysis of the instability of an electron shuttle
composed of three quantum dots: two are fixed and coupled via leads to electron
resevoirs at different chemical potentials, while the central dot is mounted on
a classical harmonic oscillator. The semiclassical analysis, which is valid if
the central dot oscillation amplitude is larger than the quantum mechanical
zero point motion, can be used to gain additional insight about the
relationship of resonances and instabilities of the device.Comment: 4 pages, 3 figures, presented at EP2DS-15, Nara, July 200
On Properties of the Isoscalar Giant Dipole Resonance
Main properties (strength function, energy-dependent transition density,
branching ratios for direct nucleon decay) of the isoscalar giant dipole
resonance in several medium-heavy mass spherical nuclei are described within a
continuum-RPA approach, taking into account the smearing effect. All model
parameters used in the calculations are taken from independent data.
Calculation results are compared with available experimental data.Comment: 12 pages, 2 figure
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