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  • 1
    Electronic Resource
    Electronic Resource
    Three-dimensional simulation of quantum cellular automata and the zero-dimensional approximation (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 84 (1998), S. 4000-4005 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present a three-dimensional simulation of the quantum cellular automaton introduced by Lent et al. [P. D. Tougaw and C. S. Lent, J. Appl. Phys. 75, 1818 (1994)]. The Hamiltonian for their Hubbard model is derived as a zero-dimensional approximation to the Hamiltonian in our simulation. This provides a link between device properties and the phenomenological parameters such as tunneling coefficients. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.368580
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  • 2
    Electronic Resource
    Electronic Resource
    Electronic properties of a quantum wire with arbitrary bending angle (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 72 (1992), S. 151-154 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The electron transmission and bound state properties of a quantum wire with a sharp bend at arbitrary angle are studied, extending results on the right angle sharp bend (the L-shaped wire). These new results are compared to those of a similar structure, the circular bend wire. The possibility of using a bent wire to perform transistor action is also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.352176
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  • 3
    Electronic Resource
    Electronic Resource
    Understanding quantum wires with circular bends (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 515-517 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is shown that propagation around a circular bend in a quantum wire is well approximated by a one-dimensional problem with a square-well potential replacing the bend. Simple analytic expressions are obtained for the transmission and bound states.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350689
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  • 4
    Electronic Resource
    Electronic Resource
    A comparison of confining potentials in the quantum wire problem (1993)
    Springer
    Applied physics 56 (1993), S. 127-131 
    Details
    ISSN: 1432-0630
    Keywords: 73.20.Dx ; 73.50.Bk ; 72.10.Bg
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A simple numerical method for solving a two-terminal quantum electronic waveguide problem is presented. The method can be adapted to a quantum wire cavity of irregular geometry and/or non-constant potential field. We compare the circular bend wire with parabolic confining potential profile to the commonly used hard wall confinement. We find an energy scaling which makes the results correspond closely.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00517679
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  • 5
    Electronic Resource
    Electronic Resource
    Validity of the transfer-matrix method for a two-dimensional electron waveguide (1994)
    Springer
    Applied physics 58 (1994), S. 581-587 
    Details
    ISSN: 1432-0630
    Keywords: 72.10 - d ; 73.20.Dx
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We solve the singularity problem of the transfer matrix method for a two-dimensional electron wave guide consisting of a sequence of cells. The method is reformulated in terms of intrinsic Bloch waves of a device cell. The resulting method is proved to be both stable and accurate. The transfer matrix is formulated without divergence problems in the open-mode approximation. The formula relating the N-cell transmission probability with that of one cell in the single-mode approximation takes exactly the same form as in the one-dimensional case.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00348169
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  • 6
    Electronic Resource
    Electronic Resource
    Contribution of the electromagnetic spin-orbit interaction to the isotopic charge density differences in lead (1980)
    Springer
    The European physical journal 298 (1980), S. 153-157 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The isotopic charge density differences among the isotopes of lead, as determined by elastic electron scattering, contain a remarkable contribution from the electromagnetic spin-orbit (EMSO) interaction. We show that the size of the effect depends upon the effective interaction employed, and discuss how it may be exploited to determine the 3p 1/2 state occupation in the ground state wave functions of the several lead isotopes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01554056
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  • 7
    Electronic Resource
    Electronic Resource
    Three-particle system for nonlocal interactions with continuum bound states (1979)
    Springer
    The European physical journal 291 (1979), S. 367-375 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The energy spectrum of the model triton is studied for a series of rank-two separable twobody interactions, each of which has a fixed deuteron wave function and a continuum bound state fixed at high energy. In each case the three particle system collapses, having an unphysical deeply bound ground state. With increasing two body repulsion, the collapsed state becomes less bound. If the continuum bound state moves to higher energies, the collapsed state becomes more bound. Our results show that for non-local two-body interactions which support a continuum bound state, or a resonance pole sufficiently close to the real axis, the three particle system is not a low energy system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01408387
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  • 8
    Electronic Resource
    Electronic Resource
    Three-particle bound states for partly nonlocal interactions with continuum bound states (1980)
    Springer
    The European physical journal 294 (1980), S. 101-105 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We determine the binding energies of the model triton for two partly nonlocal interactions consisting of a local potential with a strong repulsive core and a nonlocal separable interaction acting only inside the core region, which is responsible for the occurrence of a continuum bound state at very high energies in the total interaction. The ground state of the three-particle system does not collapse in this case as for purely nonlocal interactions. The occurrence of a continuum bound state is therefore only a necessary but not a sufficient condition for such an unphysical collapse in few particle systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01473126
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  • 9
    Electronic Resource
    Electronic Resource
    Charge and mass radii of the tin isotopes (1988)
    Springer
    The European physical journal 329 (1988), S. 393-405 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Ft ; 21.10.Gv ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Data on the isotope shift of the nuclear charge densities of the tin isotopes and of their mean square charge radii are considered from the viewpoint of the Hartree-Fock and Droplet Models. Attention is paid to the electromagnetic corrections of order 1/m2. Through a leptodermous analysis of charge and matter densities we find: (i) differences of m.s. charge radii are mainly sensitive to the external region, (ii) the electromagnetic corrections are important in that region, (iii) despite different leptodermous properties, forces Ska and GO-P lead to the same neutron skin thickness. The average rate of variation of the proton m.s. radius is interpreted as favouring either a low valueQ≈30 MeV for the droplet model asymmetry parameter, or a zero value for the saturation asymmetry parameterL.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294344
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