Thomas, K J , Nicholls, James, Simmons, M Y , Pepper, M , Mace, D R and Ritchie, D A (1996) Possible spin polarization in a one-dimensional electron gas. Physical Review Letters, 77 (1).
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In zero magnetic field, conductance measurements of clean one-dimensional (1D) constrictions defined in GaAs/AlGaAs heterostructures show up to 26 quantized ballistic plateaus, as well as a structure close to 0.7(2e2/h). In an in-plane magnetic field all the 1D subbands show linear Zeeman splitting, and in the wide channel limit the g factor is g = 0.4, close to that of bulk GaAs. For the last subband, spin splitting originates from the structure at 0.7(2e2/h), indicating spin polarization at B = 0. The measured enhancement of the g factor as the subbands are depopulated suggests that the ''0.7 structure'' is induced by electron electron interactions.
This is a Submitted version This version's date is: 1/7/1996 This item is not peer reviewed
https://repository.royalholloway.ac.uk/items/01969f23-fbec-d66e-1698-3b2b2e1fdda8/4/
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