Fano factor reduction on the 0.7 conductance structure of a ballistic one-dimensional wire

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)

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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Abstract

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.

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This is a Submitted version
This version's date is: 10/9/2004
This item is not peer reviewed

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https://repository.royalholloway.ac.uk/items/3a024cb0-fac1-a8b3-3d41-0ca06112a515/1/

Item TypeJournal Article
TitleFano factor reduction on the 0.7 conductance structure of a ballistic one-dimensional wire
AuthorsRoche, P
Segala, J
Glattli, D C
Nicholls, James
Pepper, M
Graham, A C
Thomas, K J
Simmons, M Y
Ritchie, D A
Uncontrolled KeywordsQUANTUM POINT CONTACTS, SCATTERING-THEORY, ELECTRON-GAS, SHOT-NOISE
DepartmentsFaculty of Science\Physics
Research Groups and Centres\Physics\Low Temperature Physics

Identifiers
doihttp://dx.doi.org/10.1103/PhysRevLett.93.116602

Deposited by Research Information System (atira) on 24-May-2012 in Royal Holloway Research Online.Last modified on 24-May-2012

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