| Budget Amount *help |
¥1,950,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2006: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2005: ¥600,000 (Direct Cost: ¥600,000)
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| Research Abstract |
The purpose of this study is to investigate resonant effect of Zener tunneling current in a p-i-n diode which has a quantum well or sup erlattice in the intrinsic region.
In order to do it, first, we have developed a semiclassical theory to describe tunneling phenomena (M. Morifuji and J. Nishie, Physical Review B71, 035334 (2005)). Next, we developed a theory to describe formation process of a quantum state (K. Ikegami, M. Morifuji, et. al., Physica E33, 381-387 (2006)). By using these theories, we calculated Zener tunneling current in various conditions. and found conditions in which the resonant effect is dominant.
Further, we extended these theories to the case of time dependent voltage and calculated Zener current under high-frequency AC voltage. We also applied these theories to the case of magnetic tunneling, that is spin-polarization exists.
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