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TT: Fachverband Tiefe Temperaturen

TT 10: Nanotubes and Nanoribbons

TT 10.3: Vortrag

Montag, 16. März 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).