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Control and Detection of Singlet-Triplet Mixing in a Random Nuclear Field

Koppens, F. H. L. and Folk, J. A. and Elzermann, J. M. and Hanson, R. and Beveren, L. H. Willems van and Vink, I. T and Tranitz, Hans-Peter and Wegscheider, Werner and Kouwenhoven, Leo P. and Vandersypen, L. M. K. (2005) Control and Detection of Singlet-Triplet Mixing in a Random Nuclear Field. Science 309 (5739), pp. 1346-1350.

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We observed mixing between two-electron singlet and triplet states in a double quantum dot, caused by interactions with nuclear spins in the host semiconductor. This mixing was suppressed when we applied a small magnetic field or increased the interdot tunnel coupling and thereby the singlet-triplet splitting. Electron transport involving transitions between triplets and singlets in turn ...


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Item type:Article
Date:21 July 2005
Institutions:Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
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Dewey Decimal Classification:500 Science > 530 Physics
Created at the University of Regensburg:Unknown
Deposited on:11 Jan 2010 13:40
Last modified:13 Mar 2014 12:23
Item ID:11972
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