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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: Talk
Wednesday, March 16, 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.