Charge transport in boron-doped nano MOSFETs: Towards single-dopant electronics

Y Ono, M Khalafalla, K Nishiguchin, Kei Takashina, A Fujiwara, S Horiguchi, H Inokawa, Y Takahashi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We investigate the hole transport in p-channel field-effect transistors doped with boron, at low temperatures (6–28 K). In transistors with a relatively large dimension, we observe the acceptor-mediated hopping and carrier freezeout, both of which are strongly influenced by the gate bias. In nanoscale transistors, these features turn into single-charge tunneling, i.e., the trapping/detrapping of single holes by/from individual acceptors. The statistics of the appearance of the modulation in a few ten samples indicates that the number of acceptors is small, or even just one, indicating that what we have observed is single-charge-transistor operation by a single-acceptor quantum dot.
Original languageEnglish
Pages (from-to)6252-6256
Number of pages5
JournalApplied Surface Science
Volume254
Issue number19
DOIs
Publication statusPublished - 2008

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