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52. R. Hoffmann-Vogel, Imaging prototypical aromatic molecules on insulating surfaces: a review,

Reports on Progress in Physics 81, 016501 (2018)

51. R. Pfender-Siedle, J. Hauser, and R. Hoffmann-Vogel,
Atomic discreteness and the nature of structural equilibrium in conductance histograms of electromigrated Cu nanocontacts,
Physical Review B 95, 235418 (2017),
arXiv:1709.07272

50. C. Pérez León, H. Drees, S. M. Wippermann, M. Marz, and R. Hoffmann-Vogel,
Atomically resolved scanning force studies of vicinal Si(111),
Physical Review B 95, 245412 (2017),
arXiv:1711.03025

49. R. Hoffmann-Vogel,
Electromigration and the structure of metallic nanocontacts,
Applied Physics Reviews 4, 031302 (2017)

48. Th. Späth, M. Popp, C. Pérez León, M. Marz, and R. Hoffmann-Vogel,
Near-equilibrium measurement of quantum size effects using Kelvin probe force microscopy,
Nanoscale 9, 7868 (2017)

47. D. Staudt, and R. Hoffmann-Vogel,
Controlled electromigration of thin Pb films started from the normal and from the superconducting state,
Journal of Physics D: Applied Physics 50, 185301 (2017)

46. D. Arnold, M. Marz, S. Schneider, and R. Hoffmann-Vogel,
Structure and local charging of electromigrated Au nanocontacts,
Nanotechnology 28, 055206 (2017)

45. J. S. Hauser, J. Schwichtenberg, M. Marz, C. Sürgers, A. Seiler, U. Gerhards, F. Messerschmidt, A. Hensel, R. Dittmeyer, H. v. Löhneysen, and R. Hoffmann-Vogel,
Controlled electromigration and oxidation of free-standing copper wires,
Applied Physics A 122, 1068 (2016)

44. C. Pérez León, H. Drees, S. Wippermann, M. Marz, and R. Hoffmann-Vogel,
Atomic-scale imaging of the surface dipole distribution of stepped surfaces,
Journal of Physical Chemistry Letters 7, 426 (2016),
arXiv:1711.02356

43. D. Stöffler, and R. Hoffmann-Vogel,
Enhanced positioning precision and in situ macroscopic contacts for shadow-evaporated nanostructures,
Journal of Vacuum Science and Technology B 33, 013201 (2015)

42. R. Hoffmann-Vogel,
Atomistic features in the electrochemical potential drop across a graphene grain boundary,
Nanotechnology 25, 480501 (2014) (invited viewpoint)

41. R. M. Reeve, A. Loescher, M.-A. Mawass, R. Hoffmann-Vogel and Mathias Kläui,
Domain wall pinning in ultra-narrow electromigrated break junctions,
Journal of Physics: Condensed Matter 26, 474207 (2014)

40. D. Stöffler, M. Marz, B. Kießig, T. Tomanic, H. v. Löhneysen, and R. Hoffmann-Vogel,
Resistance-voltage dependence of nanojunctions during electromigration in ultrahigh vacuum,
Physical Review B 90, 115406 (2014),
arXiv:1411.0105

39. J. L. Neff , P. Milde, C. Pérez León, M. D. Kundrat, Ch. R. Jacob, L. Eng, R. Hoffmann-Vogel,
Epitaxial Growth of Pentacene on Alkali Halide Surfaces Studied by Kelvin Probe Force Microscopy,
ACS Nano 8, 3294 (2014),
arXiv:1710.06652

38. M. Sauter, R. Hoffmann-Vogel, C. Sürgers, and H. v. Löhneysen,
Temperature-dependent scanning tunneling spectroscopy on the Si(557)-Au surface,
Physical Review B 89, 075406 (2014),
arXiv:1402.4367

37. B. Ittermann, R. Hoffmann-Vogel and A. Baratoff,
Simulations of metastable states near the apex of a force microscope tip interacting with an ionic crystalline surface,
Physical Review B 87, 195437 (2013),
arXiv:1208.4730

36. A. C. von Bieren, A. K. Patra, S. Krzyk, J. Rhensius, L. J. Heyderman, R. Hoffmann-Vogel, and M. Kläui,
Domain-Wall Induced Large Magnetoresistance Effects at Zero Applied Field in Ballistic Nanocontacts,
Physical Review Letters 110, 067203 (2013),
arXiv:1208.4985

35. J. L. Neff, J. Götzen, E. Li, M. Marz, and R. Hoffmann-Vogel,
Molecular resolution imaging of pentacene on KCl(001),
Beilstein Journal of Nanotechnology 3, 186 (2012)

34. R. Hoffmann and B. A. Hermann,
Scanning Probe Microscopy,
in: Schalley, C. A. (editor), Analytical Methods in Supramolecular Chemistry, 2. Edition, Wiley-VCH, Weinheim, Berlin; ISBN-10: 3-527-32982-X, ISBN-13: 978-3-527-32982-3

33. D. Stöffler, S. Fostner, P. Grütter, and R. Hoffmann-Vogel,
Scanning probe microscopy imaging of metallic nanocontacts,
Physical Review B Brief Reports 85, 033404 (2012),
arXiv:1112.6309

32. D. Stöffler, H. v. Löhneysen, and R. Hoffmann,
STM-induced surface aggregates on metals and oxidized silicon,
Nanoscale 3, 3391 (2011),
arXiv:1208.5336

31. A. K. Patra, A. von Bieren, S. Krzyk, J. Rhensius, L. J. Heyderman, R.Hoffmann, and M. Kläui,
Magnetoresistance measurement of tailored Permalloy nanocontacts,
Physical Review B 82, 134447 (2010),
KOPS

30. R. Hoffmann, D. Weiner, A. Schirmeisen, and A. S. Foster,
Sublattice identification in noncontact atomic force microscopy of the NaCl(001) surface,
Physical Review B 80, 115426 (2009)

29. R. Hoffmann,
Tip-sample interactions as a function of distance on insulating surfaces,
in: Morita, S., Giessibl, F.J., and Wiesendanger, R. (editors), Noncontact Atomic Force
Microscopy, Volume 2, Springer, Berlin, Heidelberg, New York, ISBN: 978-3-642-01494-9.

28. C. Pérez-León, C. Sürgers, M. Mayor, M. Marz, R. Hoffmann, and H. v. Löhneysen,
Room temperature STM investigation of large &pi-conjugated oligomers and tetrahydrofuran
codeposited by pulse injection,

Journal of Physical Chemistry C 113, 14335 (2009)

27. H. Hölscher, P. Milde, U. Zerweck, L. M. Eng and R. Hoffmann,
The Effective Quality Factor in Dynamic Force Microscopes with Fabry-Perot-Interferometer
Detection,

Applied Physics Letters 94, 223514 (2009)

26. K. Ruschmeier, A. Schirmeisen and R. Hoffmann,
Site-specific force-vector field studies of KBr(001) by atomic force microscopy,
Nanotechnology 20, 264013 (2009)

25. K. Ruschmeier, A. Schirmeisen and R. Hoffmann,
Atomic Scale Force Vector Fields,
Physical Review Letters 101, 156102 (2008)

24. R. Hoffmann, D. Weissenberger, J. Hawecker and D. Stöffler,
Conductance of gold nanojunctions thinned by electromigration,
Applied Physics Letters 93, 043118 (2008)

23. A. Singh, C. Sürgers, R. Hoffmann, H. v. Löhneysen, T. V. Ashworth, N. Pilet and H. J. Hug,
Spin-polarized current versus stray field in a perpendicularly magnetized superconducting spin
switch,

Applied Physics Letters 91, 152504 (2007)

22. R. Hoffmann, A. Baratoff, H. J. Hug, H. R. Hidber, H. v. Löhneysen and H.-J. Güntherodt,
Mechanical manifestations of rare atomic jumps in dynamic force microscopy,
Nanotechnology 18, 395503 (2007)

21. M. Sauter, R. Hoffmann, C. Sürgers and H. v. Löhneysen,
Correlations between one-dimensional structures at the Si(557):Au surface,
Physical Review B 75, 195436 (2007)

20. M. A. Lantz, R. Hoffmann, A. S. Foster, A. Baratoff, H. J. Hug, H. R. Hidber
and H.-J. Güntherodt,
Site-specific force-distance characteristics on NaCl(001): Measurements versus atomistic
simulations,

Physical Review B 74, 245426 (2006)

19. C. Gärtner, R. Hoffmann, F. Perez-Willard, M. Sauter, C. Sürgers and H. v. Löhneysen,
Fully UHV compatible fabrication of submicrometer-spaced electrical contacts,
Review of Scientific Instruments 77, 026101 (2006)

18. R. Hoffmann, C. Barth, A. S. Foster, A. L. Shluger, H. J. Hug, H.-J. Güntherodt, R. M. Nieminen
and M. Reichling,
Measuring Site Specific Cluster Surface Interaction,
The Journal of the American Chemical Society 127, 17863 (2005)

17. T. Kunstmann, A. Schlarb, M. Fendrich, Th. Wagner, R. Möller, and R. Hoffmann,
Dynamic force microscopy study of 3,4,9,10-perylenetetracarboxylic dianhydride on KBr(001),
Physical Review B Rapid Communications 71, 121403 (2005)

16. S. A. Burke, J. M. Mativetsky, R. Hoffmann, and P. Grütter,
Nucleation and Submonolayer Growth of C60 on KBr,
Physical Review Letters 94, 096102 (2005)

15. R. Hoffmann, L. N. Kantorovich, A. Baratoff, H. J. Hug, and H.-J. Güntherodt,
Sublattice identification in scanning force microscopy on alkali halide surfaces,
Physical Review Letters 92, 146103 (2004)

14. J. M. Mativetsky, S. A. Burke, R. Hoffmann, Y. Sun and P. Grütter,
Molecular Resolution Imaging of C60 on Au(111) by Dynamic Force Microscopy,
Nanotechnology 15, S40 (2004)

13. M. A. Lantz, H. J. Hug, R. Hoffmann, S. Martin, A. Baratoff and H.-J. Güntherodt,
Short-range electrostatic interactions in atomic resolution scanning force microscopy on the
Si(111) 7x7-surface,

Physical Review B 68, 035324 (2003)

12. R. Hoffmann, M. A. Lantz, H. J. Hug, P. J. A. van Schendel, P. Kappenberger, S. Martin,
A. Baratoff and H.-J. Güntherodt,
Atomic resolution imaging and force versus distance measurements on NiO (001) using low
temperature scanning force microscopy,

Physical Review B 67, 085402 (2003)

11. R. Hoffmann, D. E. Bürgler, P. J. A. van Schendel, H. J. Hug, S. Martin and H.-J. Güntherodt,
Perpendicular magnetic domains of a thin Ag/Fe/Ag film observed by magnetic force microscopy
at room temperature,

Journal of Magnetism and Magnetic Materials 250, 32 (2002)

10. R. Hoffmann, M. A. Lantz, H. J. Hug, P. J. A. van Schendel, P. Kappenberger, S. Martin,
A. Baratoff and H.-J.Güntherodt,
Atomic resolution imaging and force versus distance measurements on KBr (001) using low
temperature scanning force microscopy,

Applied Surface Science 188, 238 (2002)

9. M. A. Lantz, H. J. Hug, R. Hoffmann, P. J. A. van Schendel, P. Kappenberger, S. Martin,
A. Baratoff and H.-J. Güntherodt,
Quantitative Measurement of Short-Range Chemical Bonding Forces,
Science 291, 2580 (2001)

8. H. J. Hug, M. A. Lantz, A. Abdurixit, P. J. A. van Schendel, R. Hoffmann, P. Kappenberger
and A. Baratoff,
Subatomic Features in Atomic Force Microscopy Images,
Science 291, 2509a (2001)

7. P. J. A. van Schendel, H. J. Hug, R. Hoffmann, S. Martin, P. Kappenberger, M. A. Lantz
and H.-J. Güntherodt,
Applications of Tip Calibration in Magnetic Force Microscopy (MFM),
in: Hadjipanayis, G.C. (editor), Magnetic Storage Systems Beyond 2000, page 313, Kluwer
Academic Publishers, Dordrecht, Netherlands (2001)

6. M. A. Lantz, H. J. Hug, P. J. A. van Schendel, R. Hoffmann, S. Martin, A. Baratoff, A. Abdurixit,
H.-J. Güntherodt and Ch. E. Gerber,
Low temperature scanning force microscopy of the Si(111) 7x7 surface,
Physical Review Letters 84, 2642 (2000)

5. P. Kamp, A. Marty, B. Gilles, R. Hoffmann, S. Marchesini, M. Belakhovsky, C. Boeglin,
H. A. Dürr, G. van der Laan, S. S. Dhesi and A. Rogalev,
Correlation of spin and orbital anisotropies with chemical order in Fe0.5Pd0.5 alloy films using
magnetic circular X-ray dichroism,

Physical Review B 59, 1105 (1999)

4. V. Gehanno, R. Hoffmann, Y. Samson, A. Marty and S. Auffret,
In plane to out of plane magnetic reorientation transition in partially ordered FePd thin films,
European Physical Journal B 10, 457 (1999)

3. R. Hoffmann, Y. Samson, A. Marty, V. Gehanno, B. Gilles and J. E. Mazille,
Shape instability in out of equilibrium magnetic domains observed in ultrathin magnetic films with
perpendicular anisotropy,

Journal of Magnetism and Magnetic Materials 192, 409 (1999)

2. P. Kamp, A. Marty, B. Gilles, R. Hoffmann, S. Marchesini, M. Belakhovsky, C. Boeglin,
H. A. Dürr, S. S. Dhesi and G. van der Laan,
Evolution of spin and orbital magnetic moments anisotropies with chemical order in Fe0.5Pd0.5
alloy films,

Journal of Magnetism and Magnetic Materials 199, 628 (1999)

1. Y. Samson, A. Marty, R. Hoffmann, V. Gehanno and B. Gilles,
Magnetic domains in thin films with perpendicular anisotropy: An extensive study,
Journal of Applied Physics 85, 4604 (1999)

Scientific career

1992 - 1998: Study of Physics, University of Karlsruhe and Ecole Nationale Superieure de Physique de Grenoble

1998 - 2001: Doctoral Thesis, University of Basel, Institute of Physics

2002 - 2003: Postdoc, McGill university, Montreal

2003 - 2009: Assistant, University of Karlsruhe

2010 - 2015: ERC Starting Grant, Karlsruhe Institute of Technology

2016 - 2017: Lecturer, Karlsruhe Institute of Technology

2018 - present: Heisenberg-fellow, University of Konstanz