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2007 | 112 | 2 | 221-226
Article title

Current Fluctuations in Single Barrier Vertical GaAs/AlAs/GaAs Tunneling Devices

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EN
Abstracts
EN
We report the experimental results of the low temperature (T = 4.2 K) low-frequency current fluctuations measurements in the single-barrier resonant tunneling GaAs/AlAs/GaAs device with Siδ-doping in the center of the 10 nm thick AlAs barrier. The dimensions of the device were 200μm by 200μm. For the biasing voltages 0.1 V<|U|<1 V we observed the Fano factors between F = 0.7 and F = 0.95. We explain it by the existence of the trapping centers/imperfections/resonant levels inside the barrier participating in the transport for this range of voltages. Only for the smallest biasing voltages the Fano factor tends to F = 1, expected for a highly nontransparent barrier.
Keywords
EN
Publisher

Year
Volume
112
Issue
2
Pages
221-226
Physical description
Dates
published
2007-08
received
2007-06-09
Contributors
author
  • Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
author
  • Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
References
  • 1. Ya.M. Blanter, M. Buttiker, Phys. Rep., 336, 1, 2000
  • 2. J. Davies, P. Hyldgaard, S. Hershfield, J. Wilkins, Phys. Rev. B, 46, 9620, 1992
  • 3. Y. Chen, R.A. Webb, Phys. Rev. B, 73, 035424, 2006
  • 4. M. Gryglas, M. Baj, B. Chenaud, B. Jouault, A. Cavanna, G. Faini, Phys. Rev. B, 69, 165302, 2004
  • 5. B. Jouault, M. Gryglas, G. Faini, U. Gennser, A. Cavanna, M. Baj, D.K. Maude, Phys. Rev. B, 73, 155415, 2006 and Virtual Journal of Nanoscale Science and Technology, April 24, 2006, Vol. 13
  • 6. G. Ferrari, M. Sampietro, Rev. Sci. Instrum., 73, 2717, 2002
  • 7. Y.V. Nazarov, J.J.R. Struben, Phys. Rev. B, 53, 15466, 1996
  • 8. A. Nauen, J. Koenemann, U. Zeitler, F. Hohls, R.J. Haug, Physica E, 12, 865, 2002
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv112n215kz
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