Single-Electron Transistors on a Tip Array


An array of tips with a metallic single-electron transistor at each tip end. © MPI-FKF / J. Weber


Single-electron transistors are very sensitive electrometers which can easily detect even the presence of an electron or ion charge in its vicinity. We have developed a technique to fabricate a linear array of tips where on each tip a metal single-electron transistor is located. These single-electron transistors can be independently operated in parallel and show nicely Coulomb blockade effect below 0.1 Kelvin. Nowadays, we use this tip array in a scanning probe microscope working in a 3He–4He dilution refrigerator.




Fabrication of an array of single-electron transistors for a scanning probe microscope sensor
J. Weber, J. Weis, M. Hauser, K. von Klitzing
Nanotechnology 19, 37 (2008)



Einzelelektronen-Transistoren auf Spitzen zur Verwendung in der Rastersondenmikroskopie bei tiefen Temperaturen
Jochen Weber, Dissertation, Technische Universität Ilmenau (2009)

Scanning Single-Electron Transistor Array Microscope to Probe a Two-Dimensional Electron System under Quantum Hall Conditions below 40 milli-Kelvin
Marcel D. Mausser, Dissertation, Universität Stuttgart (2017)

A Scanning Single-Electron Transistor Array Microscope Probes the Hall Potential Profile in the Fractional Quantum Hall Regime
Andreas W. Gauß, Dissertation, Universität Stuttgart (2019)

Experimental technique to resolve the compressible/incompressible droplet landscape in a (Al,Ga)As quantum Hall sample and Hall potential profiles in a 3D TI mercury telluride sample
Maximilian Kühn, Dissertation, Universität Stuttgart (2022)


Annual Reports

Single-electron transistors on tips for the use in scanning probe microscopy at low temperatures (pdf)
J. Weber, J. Weis, K. von Klitzing (2009)

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