Journal Article

FZJ-2013-04802

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Negative differential conductance in InAs wire based double quantum dot induced by a charged AFM tip

Zhukov, A. A. (Corresponding author) ; Volk, C.FZJ* ; Winden, A.FZJ* ; Hardtdegen, H.FZJ* ; Schäpers, T.FZJ*

2012
Springer Heidelberg [u.a.]

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Please use a persistent id in citations: doi:10.1134/S1063776112110131

Abstract: We investigate the conductance of an InAs nanowire in the nonlinear regime in the case of low electron density where the wire is split into quantum dots connected in series. The negative differential conductance in the wire is initiated by means of a charged atomic force microscope tip adjusting the transparency of the tunneling barrier between two adjoining quantum dots. We confirm that the negative differential conductance arises due to the resonant tunneling between these two adjoining quantum dots. The influence of the transparency of the blocking barriers and the relative position of energy states in the adjoining dots on a decrease of the negative differential conductance is investigated in detail.

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Contributing Institute(s):

1. Halbleiter-Nanoelektronik (PGI-9)
2. JARA-FIT (JARA-FIT)

Research Program(s):

1. 422 - Spin-based and quantum information (POF2-422) (POF2-422)

Appears in the scientific report 2013

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Database coverage:
JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection ; Zoological Record

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