Berlin 2012 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 13: Transport: Poster Session
TT 13.10: Poster
Montag, 26. März 2012, 15:00–19:00, Poster B
Low temperature transport in carbon nanotubes — •Birgit Kießig1,2, Cornelius Thiele2,3, Ralph Krupke3, Kai Grube1, Roland Schäfer1, and Hilbert v. Löhneysen1,2 — 1Karlsruher Institut für Technologie, Institut für Festkörperphysik — 2Karlsruher Institut für Technologie, Physikalisches Institut — 3Karlsruher Institut für Technologie, Institut für Nanotechnologie
We present measurements on gold contacted metallic carbon nanotubes (CNTs) performed in a 3He/4He dilution refrigerator between base temperature (∼ 10 mK) and 5 K. In addition to the electrodes spaced 300-400 nm apart, side gates were implemented 50-150 nm from the CNTs.
IV curves show Coulomb blockade at low voltages which can be lifted by gating. For higher voltages conductance increases nonlinearly and assymmetrically. Transport modifications induced by gate voltage and magnetic field up to 8 T are characterized.