Journal
APPLIED PHYSICS LETTERS
Volume 86, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1862339
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We study the transport properties of quantum point contacts in a GaN/AlGaN heterostructure. The conductance of our devices shows well-quantized plateaus, which spin-split in high perpendicular magnetic field. The g factor is 2.55, as derived from the point contact subband splitting versus perpendicular magnetic field. In addition to the well-resolved plateaus, we also observe evidence of 0.7 structure which has been mainly investigated in the GaAs system. (C) 2005 American Institute of Physics.
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