Phase-coherent transport in trigonal gallium nitride nanowires

Title
Phase-coherent transport in trigonal gallium nitride nanowires
Authors
장준연민병철이기영박태언전지훈이재준최헌진
Issue Date
2021-01
Publisher
Nanotechnology
Citation
VOL 32-125702-7
Abstract
Gallium nitride nanowires (GaN NWs) with triangular cross-section exhibit universal conductance fluctuations (UCF) originating from the quantum interference of electron wave functions in the NWs. The amplitude of UCF is inversely proportional to the applied bias current. The bias dependence of UCF, combined with temperature dependence of the resistance suggests that phase coherent transport dominates over normal transport in GaN NWs. A unique temperature dependence of phase-coherent length and fluctuation amplitude is associated with inelastic electron?electron scattering in NWs. The phase-coherence length extracted from the UCF is as large as 400 nm at 1.8 K, and gradually decreases as temperature increases up to 60 K.
URI
http://pubs.kist.re.kr/handle/201004/72693
ISSN
0957-4484
Appears in Collections:
KIST Publication > Article
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