Presentation 2006-01-26
Periodic Coulomb oscillations in Si single-electron transistor based on multiple islands
Kensaku Ohkura, Tetsuya Kitade, Anri Nakajima,
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Abstract(in English) Single-electron transistors (SETs) utilizing the Coulomb blockade effect are promising candidates for use as basic elements of future low-power integrated circuits. The use of Si for their construction is important because of Si's compatibility with conventional fabrication techniques for large-scale integrated devices. However, it seems difficult to fabricate SETs that can be operated at room temperature reproducibly by using currently available fabrication techniques. One way to overcome the difficulty is to utilize serially connected islands instead of a single island. We fabricated highly doped Si SETs with a series of geometrically defined islands and measured those electric characteristics. Despite their island size variation, some of SETs showed clear periodic and quasiperiodic Coulomb oscillations. This is in contrast to the conventional idea that only geometrically uniform islands show periodic Coulomb oscillations. In this study, focusing on the obtained periodic Coulomb oscillations, we investigated the reason of the periodic characteristics, and presented the physical picture of conduction mechanism.
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Keyword(in English) Single-electron transistor / SET / Si / Coulomb oscillation / Coulomb blockade
Paper # ED2005-225,SDM2005-237
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Committee ED
Conference Date 2006/1/19(1days)
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Registration To Electron Devices (ED)
Language JPN
Title (in Japanese) (See Japanese page)
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Title (in English) Periodic Coulomb oscillations in Si single-electron transistor based on multiple islands
Sub Title (in English)
Keyword(1) Single-electron transistor
Keyword(2) SET
Keyword(3) Si
Keyword(4) Coulomb oscillation
Keyword(5) Coulomb blockade
1st Author's Name Kensaku Ohkura
1st Author's Affiliation Research Center for Nanodevices and Systems, Hiroshima University()
2nd Author's Name Tetsuya Kitade
2nd Author's Affiliation ROHM CO., LTD.
3rd Author's Name Anri Nakajima
3rd Author's Affiliation Research Center for Nanodevices and Systems, Hiroshima University
Date 2006-01-26
Paper # ED2005-225,SDM2005-237
Volume (vol) vol.105
Number (no) 549
Page pp.pp.-
#Pages 5
Date of Issue