Jochen Mannhart

Jochen Mannhart (* 24 April 1960 in Metzingen, Germany) is a German physicist.

Jochen Mannhart studied Physics at the University of Tübingen, Germany, from 1980 to 1986, where he also received his PhD in 1987 and his habilitation in 1994.

From 1987 to 1989, he was a visiting scientist at the IBM Thomas J. Watson Research Center in Yorktown Heights, NY. From 1989 to 1996, he was a Research Staff Member at the IBM Zurich Research Laboratory, where he was manager of the New Materials and Heterostructures research group. From 1996 to 2011, he was a chaired professor at the Center for Electronic Correlations and Magnetism at the University of Augsburg, Germany.

Since the summer of 2011, he has been a director of the Max Planck Institute for Solid State Research in Stuttgart, where he is head of the Solid State Quantum Electronics department.

Prizes and Awards

The 2014 European Physical Society Condensed Matter Division Europhysics Prize is awarded to Jochen Mannhart. He was the 2008 recipient of the Gottfried Wilhelm Leibniz Prize of the Deutsche Forschungsgemeinschaft (German Research Society, DFG), award endowment 2.5 million euros, for his research in the field of experimental solid-state physics. In 1986, he received the Friedrich Förster Prize of the University of Tübingen, Germany.

Research

Mannhart’s research includes the fabrication of novel all-oxide field-effect transistors, in which phase changes can be switched at interface layers, including phase changes to superconductivity. Under his leadership, his research group has developed an improved scanning probe microscope (frequency-modulated lateral force microscopy), which features a resolution of 77 picometers. With this instrument, his group succeeded in imaging individual atoms with subatomic resolution, which was used, for example, to investigate the atomic mechanism of friction. With P. Chaudhari and D. Dimos, J. Mannhart revealed that grain alignment is key to the fabrication of high-temperature superconductors with useful critical currents, so that they are suitable for practical applications such as modern high-T_c superconducting cables. Another research area is thermoelectronic generators.

Key Publications

• Li, L., C. Richter, S. Paetel, T. Kopp, J. Mannhart, and R.C. Ashoori: Very large capacitance enhancement in a two-dimensional electron system. Science 332, 825-828 (2011) doi:10.1126/science.1204168
• Mannhart, J., and D.G. Schlom: Oxide interfaces — An opportunity for electronics. Science 327, 1607-1611 (2010) doi:10.1126/science.1181862
• Cen, C., S. Thiel, J. Mannhart, and J. Levy: Oxide nanoelectronics on demand. Science 323, 1026-1030 (2009) doi:10.1126/science.1168294
• Loder, F., A.P. Kampf, T. Kopp, J. Mannhart, C.W. Schneider, and Y.S. Barash: Magnetic flux periodicity of h/e in superconducting loops. Nature Physics 4, 112-115 (2008) doi:10.1038/nphys813
• Reyren, N., S. Thiel, A.D. Caviglia, L. Fitting Kourkoutis, G. Hammerl, C. Richter, C.W. Schneider, T. Kopp, A.-S. Ruetschi, D. Jaccard, M. Gabay, D.A. Muller, J.-M. Triscone, and J. Mannhart: Superconducting interfaces between insulating oxides. Science 317, 1196-1199 (2007) doi:10.1126/science.1146006
• Thiel, S., G. Hammerl, A. Schmehl, C.W. Schneider, and J. Mannhart: Tunable quasi-two-dimensional electron gases in oxide heterostructures. Science 313, 1942-1945 (2006) doi:10.1126/science.1131091
• Herz, M., FJ. Giessibl, and J. Mannhart: Probing the shape of atoms in real space. Physical Review B 68, 045301 (2003) doi:10.1103/PhysRevB.68.045301
• Giessibl, FJ., M. Herz, and J. Mannhart: Friction traced to the single atom. PNAS 99, 12006-12010 (2002) doi:10.1073/pnas.182160599
• Giessibl, FJ., S. Hembacher, H. Bielefeldt al.: Subatomic features on the silicon (111)-(7×7) surface observed by atomic force microscopy. Science 289, 422-425 (2000) doi:10.1126/science.289.5478.422
• Dimos, D., P. Chaudhari, J. Mannhart, et al.: Orientation dependence of grain-boundary critical currents in YBa₂Cu₃O₇-δ Bicrystals. Physical Review Letters 61, 219-222 (1988) doi:10.1103/PhysRevLett.61.219
• Mannhart, J., J. Bosch, R. Gross, et al.: Two-dimensional imaging of trapped magnetic-flux quanta in Josephson tunnel-junctions. Physical Review B 35, 5267-5269 (1987) doi:10.1103/PhysRevB.35.5267

• "New highly efficient thermoelectronic generator". Phys.org. Retrieved 2014-03-30.