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  • 1990-1994  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Effect of threading dislocations on mobility in selectively doped heterostructures grown on Si substrates (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 3681-3683 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We studied the effect of threading dislocation scattering on the mobility of a two-dimensional electron gas. To verify our theory, we grew Si-doped AlGaAs/GaAs selectively doped heterostructures with different dislocation densities by changing the number of thermal annealing cycles. The theory agreed well with our experimental results. Previous work on high electron mobility transistors (HEMTs) fabricated on Si indicated that the device characteristics are insensitive to the dislocation density. Our theory states that the room temperature mobility reduction by dislocations with a density below 108 cm−3 does not affect HEMT device performance, which is consistent with empirically known results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.356085
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Higher nodal α-cluster band in40Ca (1994)
    Springer
    The European physical journal 349 (1994), S. 357-358 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.J ; 21.60.Gx ; 24.50.+g
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In the (6Li,d) reaction on36Ar, the strongly excited seventeen levels were observed at excitation energies above 11 MeV in40Ca. On the basis of the result of the DWBA analysis, these levels may correspond to the members of the higher nodal α-clusterK n =O+ band with prinicpal quantum numberN=14.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01288995
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Weak coupling in the upper part of thesd-shell and α-clustering in38Ar (1994)
    Springer
    The European physical journal 349 (1994), S. 297-299 
    Details
    ISSN: 1434-601X
    Keywords: 25.55.Ci ; 21.60.Gx ; 27.30.+t
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is suggested that weak coupling picture for theα-cluster states holds not only in the44Ti∼40Ca region but also in the upper part of thesd-shell region. To confirm this experimentally, theα-clustering aspects of38Ar is investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01288978
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    Paper (German National Licenses)
    Fulltext
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