We studied small-capacitance single tunnel junctions with various tunnel resistances. In order to reduce the environmental effect, high-resistance leads were adopted for measurement. We observed the gradual weakening and disappearance of the Coulomb blockade as the tunnel resistance in the absence o
โฆ LIBER โฆ
Enhancement in spin-dependent tunneling with Coulomb blockade
โ Scribed by S Takahashi; S Maekawa
- Book ID
- 114229584
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 128 KB
- Volume
- 198-199
- Category
- Article
- ISSN
- 0304-8853
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We report the observation of enhanced spin-dependent shot noise in magnetic tunnel barriers, suggesting transport through localized states within the barrier. This is supported by the existence of negative magnetoresistance and structure in the differential conductance curves. A simple model of tunn