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  • 1
    Electronic Resource
    Electronic Resource
    Micro-electromagnets for atom manipulation (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 2906-2908 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Micro-electromagnets for atom manipulation have been constructed, including magnetic mirrors (serpentine patterns) and traps (circular patterns). They consist of planar micron-scale Au wires on sapphire substrates fabricated using lithography and electroplating. At liquid nitrogen or helium temperatures in vacuum the wires support currents of several amperes with current density ∼108 A/cm2 and power dissipation ∼10 kW/cm2, and they produce magnetic fields to 0.3 T and gradients to 103 T/cm. The micro-electromagnet mirror was used to deflect a beam of metastable helium atoms at grazing angles ∼0.5 mrad. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.121455
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  • 2
    Electronic Resource
    Electronic Resource
    Tunable electron-hole gases in gated InAs/GaSb/AlSb systems (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 481-483 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Gated structures have been fabricated on the InAs/AlSb/GaSb system enabling the control of the relative electron and hole carrier densities in these type II crossed band gap structures. By using insulated gates, a wide gate voltage range, with very low leakage levels, is obtained, allowing the study of these systems from electron dominated transport through to hole dominated. Associated with this transition, a change from positive to negative transconductance is observed. Studies of the quantum Hall effect show features related to both electron and hole Landau level formation with the crossover from electron to hole dominated transport found to be a function of the perpendicular magnetic field. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.118187
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Atomic-force-microscopic study of etched nuclear tracks at extremely short distance scale
    Amsterdam : Elsevier
    Nuclear Inst. and Methods in Physics Research, B 93 (1994), S. 52-56 
    Details
    ISSN: 0168-583X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0168-583X(94)95456-9
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  • 4
    Electronic Resource
    Electronic Resource
    Improving the specularity of magnetic mirrors for atoms (1999)
    Springer
    The European physical journal 7 (1999), S. 351-359 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 03.75.Be Atom and neutron optics - 32.80.Pj Optical cooling of atoms; trapping - 85.70.Ay Magnetic device characterization, design, and modeling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: An array of anti-parallel current-carrying wires creates an inhomogeneous magnetic field capable of reflecting neutral atoms. We present analytical and numerical analyses of the magnetic field produced by such an array, and describe methods for reducing the resulting rms angular deviation from specular reflection to less than 0.1 mrad. Careful choice of cross-sectional wire profiles is shown to dramatically improve specularity of reflection close to the surface. Additionally, we find that the specularity depends on whether the number of wires in the mirror is even or odd, and that there exists an optimal turning height above the surface that maximizes the specularity of reflection from the mirror.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530050578
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  • 5
    Electronic Resource
    Electronic Resource
    Microfabricated magnetic waveguides for neutral atoms (1999)
    Springer
    The European physical journal 7 (1999), S. 361-367 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 03.75.Be Atom and neutron optics - 32.80.Pj Optical cooling of atoms; trapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We describe how tightly confining magnetic waveguides for atoms can be created with microfabricated or nanofabricated wires. Rubidium atoms guided in the devices we have fabricated would have a transverse mode energy spacing of K. We discuss the creation of a single-mode waveguide for atom interferometry whose depth is comparable to magneto-optical trap (MOT) temperatures. We also discuss the application of microfabricated waveguides to low-dimensional systems of quantum degenerate gases, and show that confinement can be strong enough to observe fermionization in a strongly interacting bosonic ensemble.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530050579
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    Paper (German National Licenses)
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