Multitip scanning probe microscopy

We study the intriguing charge transport properties of quantum materials like topological insulators and novel 2D materials. For the best access to nanoscale charge transport properties, we develop novel multi-tip SPM instruments and corresponding measurement techniques.

Group leader: Prof. Dr. Bert Voigtländer

Members:
Dr. Vasily Cherepanov
Dr. Timofey Balashov
David Cuma, M.Sc.
Arthur Leis, M.Sc.

Prof. Dr. Bert Voigtländer

Multi-tip SPM instrument development

Multi-tip SPM instrument development

In quantum nanoscience, it is essential to perform electronic transport measurements at the nanoscale. We design ultra-compact multi-tip scanning probe instruments with we use as a “multimeter at the nanoscale”.

Charge transport at nanostructures of quantum materials

Charge transport at nanostructures of quantum materials

We reveal the nanoscale transport properties of thin films of promising quantum materials like topological insulators using multi-tip STM.

Charge Transport at Surfaces

Charge Transport at Surfaces

We acquire maps of the potential landscape which is generated by a current flowing along the surface or through a nanostructure (scanning tunneling potentiometry). These maps give insight into fundamental transport properties of quantum materials, such as the influence of defects on the local electric transport.