Dresden 2011 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 31: TR: Nanoelectronics II - Spintronics and Magnetotransport 1 (jointly with HL and MA)

TT 31.3: Vortrag

Mittwoch, 16. März 2011, 11:15–11:30, HSZ 301

Direct observation of band-gap closure for a semiconducting carbon nanotube in a large parallel magnetic field — •Sungho Jhang¹, Magdalena Margańska¹, Yurii Skourski², Milena Grifoni¹, Joachim Wosnitza², and Christoph Strunk¹ — ¹University of Regensburg, Germany — ²Dresden High Magnetic Field Laboratory, Germany

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.