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Direct Observation of Band-Gap Closure for a Semiconducting Carbon Nanotube in a Large Parallel Magnetic Field

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Jhang, Sung Ho ; Marganska, Magdalena ; Skourski, Y. ; Preusche, Dominik ; Grifoni, Milena ; Wosnitza, Joachim ; Strunk, Christoph
Date of publication of this fulltext: 10 Mar 2011 07:26


We have investigated the magnetoconductance of semiconducting carbon nanotubes (CNTs) in pulsed, parallel magnetic fields up to 60 T, and report the direct observation of the predicted band-gap closure and the reopening of the gap under variation of the applied magnetic field. We also highlight the important influence of mechanical strain on the magnetoconductance of the CNTs.

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