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[en] Nanowires based on InN are interesting because of their large surface conductivity and their low energy band gap. For nanoscaled devices operated at low temperatures electron interference effects can largely affect the transport properties. Typical phenomena are universal conductance fluctuations or weak localization. The characteristic fluctuation pattern observed in the conductance was employed to obtain information on phase-coherent transport. The conductance fluctuations were measured at low temperatures as a function of the gate voltage at fixed magnetic fields. By analyzing the root mean square and the correlation field of the conductance fluctuations at various temperatures, the phase-coherence length was determined. From the conductance traces as a function of gate voltage the variance of the conductance var (G) was determined at different magnetic fields. The largest variance was found close …
Publication date: 
1 Jan 2009

Hernandez Estevez, Gunnar Petersen, Robert Frielinghaus, Ralph Meijers, Raffaella Calarco, Thomas Schaepers, Detlev Gruetzmacher

Biblio References: 
Verhandlungen der Deutschen Physikalischen Gesellschaft