Please use this identifier to cite or link to this item:
https://doi.org/10.1063/1.1835568
DC Field | Value | |
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dc.title | Spin filtering in a two-dimensional electron gas device with asymmetric spatially spread magnetic-electric barriers | |
dc.contributor.author | Jalil, M.B.A. | |
dc.date.accessioned | 2014-06-17T03:06:39Z | |
dc.date.available | 2014-06-17T03:06:39Z | |
dc.date.issued | 2005-01-15 | |
dc.identifier.citation | Jalil, M.B.A. (2005-01-15). Spin filtering in a two-dimensional electron gas device with asymmetric spatially spread magnetic-electric barriers. Journal of Applied Physics 97 (2) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.1835568 | |
dc.identifier.issn | 00218979 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/57480 | |
dc.description.abstract | We calculate, based on the effective mass Hamiltonian, the spin dependence of ballistic transport through a two-dimensional electron gas (2DEG) under the influence of an electric U and a pair of magnetic B barriers with finite spatial width. The spin polarization of electron transmission P is strongly dependent on the degree of asymmetry in the magnetic barriers. An asymmetry in the B barrier widths and heights which conserves the magnetic vector potential A along the conduction path leads to a low P of less than 1% in the high transmission region. If conservation of A is broken, much higher P values of up to 30% is achievable but at the cost of increasing the energy threshold Eth. Finally, we suggest a scheme which utilizes a thin break in the 2DEG conduction path to achieve a comparable modulation of P of 25%, while conserving A and maintaining Eth at moderate electron energies. © 2005 American Institute of Physics. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1063/1.1835568 | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | ELECTRICAL & COMPUTER ENGINEERING | |
dc.description.doi | 10.1063/1.1835568 | |
dc.description.sourcetitle | Journal of Applied Physics | |
dc.description.volume | 97 | |
dc.description.issue | 2 | |
dc.description.page | - | |
dc.description.coden | JAPIA | |
dc.identifier.isiut | 000226700500092 | |
Appears in Collections: | Staff Publications |
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