Roche, P , Segala, J , Glattli, D C , Nicholls, James, Pepper, M , Graham, A C , Thomas, K J , Simmons, M Y and Ritchie, D A (2004) Fano factor reduction on the 0.7 conductance structure of a ballistic one-dimensional wire. Physical Review Letters, 93 (11).
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We have measured the nonequilibrium current noise in a ballistic one-dimensional wire which exhibits an additional conductance plateau at 0.7x2e2/h. The Fano factor shows a clear reduction on the 0.7 structure, and eventually vanishes upon applying a strong parallel magnetic field. These results provide experimental evidence that the 0.7 structure is associated with two conduction channels that have different transmission probabilities.
This is a Submitted version This version's date is: 10/9/2004 This item is not peer reviewed
https://repository.royalholloway.ac.uk/items/3a024cb0-fac1-a8b3-3d41-0ca06112a515/8/
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