Nonlocal voltage in a spin field effect transistor with finite channel width

Title
Nonlocal voltage in a spin field effect transistor with finite channel width
Authors
엄종화구현철장준연한석희
Keywords
Spin field effect transistor; Spin-orbit interaction; channel width; nonlocal voltage; Rashba spin splitting
Issue Date
2011-05
Publisher
Current applied physics
Citation
VOL 11, NO 3, 276-279
Abstract
Spin transport in the two-dimensional electron gas with strong spin-orbit interaction is examined by using a simple phenomenological simulation. The large spin-orbit interaction and the randomized electron trajectory due to the impurity scattering make the nonlocal voltage of a spin field effect transistor undetectable in the diffusive regime. However, the spin-precessional phase accumulates coherently in the ballistic regime and the nonlocal voltage is given by a function of spin-orbit interaction parameter. If the distance between injector and detector is comparable to the mean free path, a sinusoidal oscillation of nonlocal voltage is restored even for a wide channel.
URI
http://pubs.kist.re.kr/handle/201004/39493
ISSN
1567-1739
Appears in Collections:
KIST Publication > Article
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