http://iet.metastore.ingenta.com
1887

Accurate measurement of currents generated by single electrons transported in a one-dimensional channel

Accurate measurement of currents generated by single electrons transported in a one-dimensional channel

For access to this article, please select a purchase option:

Buy article PDF
$19.95
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
IEE Proceedings - Science, Measurement and Technology — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

The acoustoelectric current generated by the transport of single electrons using surface acoustic waves through a one-dimensional channel offers the possibility of realising a quantum standard of current based on the electronic charge e. At NPL a measurement system using a commercial electrometer has been developed for investigating the flatness and accuracy of the constant current plateaux with an uncertainty of 15 fA. Also a new instrument, based on a cryogenic current comparator (CCC), has been developed with which it is expected that a relative accuracy of 1 fA/nA can be achieved. The authors present preliminary measurements of the quantised current using the electrometer and an experimental arrangement for resolving the ‘metrological triangle’ using the CCC.

References

    1. 1)
      • J.M. Shilton , V.I. Talyanskii , M. Pepper , D.A. Ritchie , J.E.F. Frost , C.J.B. Ford , C.G. Smith , G.A.C. Jones . High-frequency single-electron transport in a quasi-onedimensional GaAs channel induced by surface acoustic waves. J. Phys., Condens. Matter , L531 - L539
    2. 2)
      • V.I. Talyanskii , J.M. Shilton , M. Pepper , C.G. Smith , C.J.B. Ford , E.H. Linfield , D.A. Ritchie , G.A.C. Jones . Single-electron transport in a one-dimensional channel byhigh-frequency surface acoustic waves. Phys. Rev. B , 15180 - 15184
    3. 3)
      • A. Kristensen , J.B. Jensen , M. Zaffalon , C.B. Sorensen , S.M. Reimann , P.E. Lindelof , M. Michel , A. Forchel . Conductance quantisation above 30 K inGaAlAs shallow-etched quantum point contacts smoothly joined to the background 2DEG. J. Appl. Phys. , 607 - 610
    4. 4)
      • F. Delahaye . A double constant current source for cryogenic current comparators andits applications. IEEE Trans. Instrum. Meas. , 426 - 429
    5. 5)
      • J.M. Williams , A. Hartland . An automated cryogenic current comparator resistance ratio bridge. IEEE Trans. Instrum. Meas. , 267 - 270
http://iet.metastore.ingenta.com/content/journals/10.1049/ip-smt_20000449
Loading

Related content

content/journals/10.1049/ip-smt_20000449
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address