Dresden 2020 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 10: Nanotubes and Nanoribbons
TT 10.3: Talk
Monday, March 16, 2020, 12:00–12:15, HSZ 204
Transport spectroscopy of MoS2 nanotubes — •Wolfgang Möckel1, Simon Reinhardt1, Luka Pirker2, Christian Bäuml1, Maja Remškar2, and Andreas K. Hüttel1 — 1Institute for Experimental and Applied Physics, University of Regensburg, 93040 Regensburg, Germany — 2Solid State Physics Department, Institut Jožef Stefan, Ljubljana, Slovenia
While synthesis procedures for nanotubes based on layered materials other than graphene are well-known, their transport properties are so far largely unexplored. Here, we introduce transition metal dichalcogenide (TMDC) nanotubes as a new material platform for quantum dots. We present results on optimized nanotube synthesis and device fabrication, and demonstrate low-temperature transport spectroscopy measurements on quantum dots lithographically defined in multiwall MoS2 nanotubes. First results show clear Coulomb blockade, with charging energies of ∼ 1 meV and discrete conductance resonances in single electron tunneling.1 Ongoing work targets improvement of the contact properties, the reduction of charge noise, as well as spectroscopy in magnetic fields. — 1S. Reinhardt et al., Phys. Stat. Sol. RRL 13, 1900251 (2019).