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Temperature dependence of shot noise in double barrier magnetic tunnel junctions
- Source :
- Physical Review B. 97
- Publication Year :
- 2018
- Publisher :
- American Physical Society (APS), 2018.
-
Abstract
- Shot noise reveals spin dependent transport properties in a magnetic tunnel junction. We report measurement of shot noise in CoFeB/MgO/CoFeB/MgO/CoFeB double barrier magnetic tunnel junctions, which shows a strong temperature dependence. The Fano factor used to characterize shot noise increases with decreasing temperature. A sequential tunneling model can be used to account for these results, in which a larger Fano factor results from larger spin relaxation length at lower temperatures.
- Subjects :
- Fano factor
Materials science
Condensed matter physics
Shot noise
02 engineering and technology
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
021001 nanoscience & nanotechnology
Double barrier
01 natural sciences
Condensed Matter::Materials Science
Tunnel magnetoresistance
Condensed Matter::Superconductivity
0103 physical sciences
010306 general physics
0210 nano-technology
Spin relaxation
Quantum tunnelling
Spin-½
Subjects
Details
- ISSN :
- 24699969 and 24699950
- Volume :
- 97
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi...........929ec5188578154dacf3a3e7d51316e1