Dresden 2017 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 75: Poster Session: Transport 1

TT 75.24: Poster

Thursday, March 23, 2017, 15:00–19:00, P2-EG

Shot noise measurements on an ultra clean CNT quantum dot — •Michael Schafberger, Daniel Steininger, Nicola Paradiso, and Christoph Strunk — University of Regensburg

Shot noise measurements are a fundamental tool for studying the correlation between charge carriers in mesoscopic devices. Here we present simultaneous measurements of shot noise and conductance on an ultra clean carbon nanotube (CNT) quantum dot. In order to favor defect free and unperturbed CNTs, chemical vapor deposition growth is performed as last nanofabrication step on to Pt-contacts. The sample shows a four-fold symmetry in the Coulomb oscillations. Boson-like excitation lines are observed in certain gate-voltage ranges. We investigate the shot noise on the electron-side, as well as the hole-side of the carbon nanotube and discuss the results.