Spatially resolved manipulation of single electrons in quantum dots using a scanned probe

Pioda, A. and Kicin, S. and Ihn, T. and Sigrist, M. and Fuhrer, A. and Ensslin, K. and Weichselbaum, A. and Ulloa, S. E. and Reinwald, M. and Wegscheider, Werner (2004) Spatially resolved manipulation of single electrons in quantum dots using a scanned probe. PHYSICAL REVIEW LETTERS, 93 (21): 216801. ISSN 0031-9007,

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Abstract

The scanning metallic tip of a scanning force microscope was coupled capacitively to electrons confined in a lithographically defined gate-tunable quantum dot at a temperature of 300 mK. Single electrons were made to hop on or off the dot by moving the tip or by changing the tip bias voltage owing to the Coulomb-blockade effect. Spatial images of conductance resonances map the interaction potential between the tip and individual electronic quantum dot states. Under certain conditions this interaction is found to contain a tip-voltage induced and a tip-voltage-independent contribution.

Item Type: Article
Uncontrolled Keywords: MICROSCOPY; STATES; FLOW; GAS;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Depositing User: Dr. Gernot Deinzer
Date Deposited: 21 Jun 2021 12:56
Last Modified: 21 Jun 2021 12:56
URI: https://pred.uni-regensburg.de/id/eprint/36948

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