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  • Articles  (2)
  • American Institute of Physics (AIP)  (2)
  • 1995-1999  (2)
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  • Articles  (2)
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  • American Institute of Physics (AIP)  (2)
  • Springer  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 2171-2173 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A method of manufacturing granular Fe–Pb–O films is described. The temperature dependence of resistivity in these samples exhibits a semiconductorlike behavior indicating that the electronic transport takes place via a tunneling process. The magnetoresistance ratio has been found to be about 10% at room temperature. The enhancement of the tunneling magnetoresistance effect is believed to be due to spin-dependent tunneling through the tunneling barrier containing magnetic ferrite formed by PbO and α-Fe2O3. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 2693-2695 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present the results of charge collection measurements on liquid encapsulated Czochralski grown semi-insulating GaAs devices for alpha particles. Experimental evidence is given which demonstrates a drastic enhancement of charge collection efficiency after prolonged illumination with 1.086 μm below-gap light. The recovery of EL2 from metastable state to normal state can also be achieved by electric field at high bias voltage. The experimental result shows that the EL2 defect is practically the dominant trap for free charge carriers and together with other shallow defects responsible for the electric compensation in semi-insulating GaAs. The metastable transition of the EL2 defect is always simultaneously accompanied by the neutralization of a shallow acceptor. No change in the type of conductivity was found. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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