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Coherent transport through a double donor system in silicon

Source: Appl. Phys. Lett. 96, 072110 (2010); doi:10.1063/1.3318271

Published 19 February 2010

KEYWORDS and PACS
Keywords
PACS
  • 85.30.Tv
    Semiconductor field effect devices
  • YEAR: 2010
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PUBLICATION DATA
ISSN:
1553-9644 (online)
Publisher:
AIP is a member of CrossRef AIP
J. Verduijn,1 G. C. Tettamanzi,1 G. P. Lansbergen,1 N. Collaert,2 S. Biesemans,2 and S. Rogge1
1Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
2InterUniversity Microelectronics Center (IMEC), Kapeldreef 75, 3001 Leuven, Belgium
In this letter, we describe the observation of the interference of conduction paths induced by two donors in a nanoscale silicon transistor, resulting in a Fano resonance. This demonstrates the coherent exchange of electrons between two donors. In addition, the phase difference between the two conduction paths can be tuned by means of a magnetic field, in full analogy to the Aharonov–Bohm effect. One of the crucial ingredients for donor based quantum computation is phase coherent manipulation of electrons. This has not been achieved as yet, and this work presents a stepping stone. ©2010 American Institute of Physics
History: Received 19 November 2009; accepted 23 January 2010; published 19 February 2010
Permalink: http://link.aip.org/link/?APPLAB/96/072110/1

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