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Blocked electron transmission/reflection by coupled Rashba–Zeeman effects for forward and backward spin filtering.
- Source :
-
Journal of Applied Physics . 10/21/2022, Vol. 132 Issue 15, p1-10. 10p. - Publication Year :
- 2022
-
Abstract
- We present a theory for studying the quantum dynamics of both the transmission and reflection behavior of a two-dimensional electron gas across a planar potential step within a quantum well. In our model, we introduce the combined effect of the Rashba–Zeeman coupling on the conduction electrons. Our results demonstrate that as the energy of an incident or a transmitted electron stays within the Zeeman energy gap, both Klein reflection and Klein tunneling occur in this Rashba–Zeeman coupled electronic system, where the former corresponds to a backward spin filter while the latter to a forward spin filter. Meanwhile, our system also predicts a critical incident angle beyond which the electron tunneling will be fully suppressed. Such distinctive spin-filtering features are expected to give rise to a variety of applications in both spintronics and quantum-computation devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 132
- Issue :
- 15
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 159808751
- Full Text :
- https://doi.org/10.1063/5.0107527