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Coulomb Blockade Effects in a Highly Doped Silicon Quantum Wire Fabricated on Novel Molecular Beam Epitaxy Grown Material

  • Thomas Koester
  • , Frank Goldschmidtboeing
  • , Birgit Hadam
  • , Josef Stein
  • , Stefan Altmeyer
  • , Bernd Spangenberg
  • , Heinrich Kurz
  • , Robert Neumann
  • , Karl Brunner
  • , Gerd Abstreiter
  • RWTH Aachen University
  • Walter Schottky Institut

Research output: Contribution to journalConference articlepeer-review

19 Scopus citations

Abstract

Coulomb blockade effects are studied in highly doped molecular-beam-epitaxy grown silicon quantum wires. The nanometer structure of the single electron tunneling transistor (SETT) is fabricated by electron beam lithography (EBL), anisotropic reactive ion etching (RIE) and low temperature oxide deposition. An extended Coulomb blockade is observed even at T = 130 K in the I-V characteristics: while outside the blockade region a clear Coulomb staircase is visible. The zero-conductivity range is significantly affected by the applied gate voltage. In addition, oscillations of the Coulomb blockade with gate potential are observed. The nature of tunnel burners present in this wire is discussed.

Original languageEnglish
Pages (from-to)465-468
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume38
Issue number1 B
DOIs
StatePublished - 1999
EventProceedings of the 1998 International Symposium on Formation, Physics and Device Application of Quantum Dot Structures, QDS-98 - Sapporo, Japan
Duration: 31 May 19984 Jun 1998

Keywords

  • BESOI
  • Coulomb blockade
  • Electron beam lithography
  • Molecular beam epitaxy
  • Silicon
  • Single electron tunneling transistors

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