Publications
Publications on matter-wave optics
2022
Enhanced elastic scattering of He2 and He3 from solids by multiple-edge diffraction
Lee Yeong Kim, Sanghwan Park, Chang Young Lee, Wieland Schöllkopf, and Bum Suk Zhao, Phys. Chem. Chem. Phys. 24, 21593–21600 (2022).
Matter-wave optics: Observing an ultracold atomic cloud expanding in free fall
Wieland Schöllkopf Natural Sciences 2(1), e20210102 (2022).
2021
Experimental test of Babinet’s principle in matter-wave diffraction
Lee Yeong Kim, Ju Hyeon Lee, Yun-Tae Kim, Sanghwan Park, Chang Young Lee, Wieland Schöllkopf, and Bum Suk Zhao, Phys. Chem. Chem. Phys. 23, 8030–8036 (2021).
Grating Diffraction of Molecular Beams: Present Day Implementations of Otto Stern’s Concept
Wieland Schöllkopf In B. Friedrich, & H. Schmidt-Böcking (Eds.), Molecular Beams in Physics and Chemistry: From Otto Stern's Pioneering Exploits to Present-Day Feats (pp. 575-593). Cham: Springer, (2021).
2019
Matter-Wave Diffraction from a Periodic Array of Half Planes
Ju Hyeon Lee, Lee Yeong Kim, Yun-Tae Kim, Chang Young Lee, Wieland Schöllkopf, and Bum Suk Zhao, Phys. Rev. Lett. 122, 040401 (2019). Editors' Suggestion
2016
Universal Diffraction of Atomic and Molecular Matter-Waves: A Comparison of He and D2 Quantum Reflected from a Grating
Weiqing Zhang, Ju Hyeon Lee, Hye Ah Kim, Byung Gwun Jin, Bong Jun Kim, Lee Yeong Kim, Bum Suk Zhao, and Wieland Schöllkopf, ChemPhysChem 17, 3670 – 3676 (2016).
Universal diffraction of atoms and molecules from a quantum reflection grating
Bum Suk Zhao, Weiqing Zhang, and Wieland Schöllkopf, Science Advances 2, e1500901 (2016).
Imaging the He2 quantum halo state using a free electron laser
Stefan Zeller, Maksim Kunitski, Jö̈rg Voigtsbergea, Anton Kalinia, Alexander Schotteliua, Carl Schober, Markus Waitz, Hendrik Sann, Alexander Hartung, Tobias Bauer, Martin Pitzer, Florian Trintera Christoph Goihl, Christian Janke, Martin Richter, Gregor Kastirke, Miriam Weller, Achim Czasch, Markus Kitzler, Markus Braune, Robert E. Grisenti, Wieland Schöllkopf, Lothar Ph. H. Schmidt, Markus S. Schöffler, Joshua B. Williams, Till Jahnke, and Reinhard Dörner, PNAS 113 (51), 14651-14655 (2016).
2015
Observation of the Efimov state of the helium trimer
Maksim Kunitski, Stefan Zeller, Jörg Voigtsberger, Anton Kalinin, Lothar Ph. H. Schmidt, Markus Schöffler, Achim Czasch, Wieland Schöllkopf, Robert E. Grisenti, Till Jahnke, Dörte Blume, Reinhard Dörner, Science 348, 551-555 (2015).
2014
Imaging the structure of the trimer systems 4He3 and 3He4He2
J. Voigtsberger, S. Zeller, J. Becht, N. Neumann, F. Sturm, H.-K. Kim, M. Waitz, F. Trinter, M. Kunitski, A. Kalinin, J. Wu, W. Schöllkopf, D. Bressanini, A. Czasch, J. B. Williams, K. Ullmann-Pfleger, L. Ph. H. Schmidt, M. S. Schöffler, R. E. Grisenti, T. Jahnke, and R. Dörner, Nature Communications 5, 5765 (2014).
Experimental observation of the vibrational wavefunction of 4He2, 4He3 and 3He4He2 using strong laser-fields
J. Voigtsberger, J. Becht, N. Neumann, F. Sturm, M. Kunitski, A. Kalinin, J. Wu, S. Zeller, M. S. Schöffler, W. Schöllkopf, D. Bressanini, A. Czasch, L. Ph. H. Schmidt, R. E. Grisenti, T. Jahnke, and R. Dörner, Journal of Physics: Conference Series 488 (13), 132024 (2014).
Mit Kanonen auf Tröpfchen
W. Schöllkopf, Physik Journal 13 (11), 22-23 (2014).
2013
Non-destructive quantum reflection of helium dimers and trimers from a plane ruled grating
B. S. Zhao, W. Zhang and W. Schöllkopf, Molecular Physics 111 (12-13), 1772-1780 (2013).
2012
Fundamental physics: Molecules star in quantum movie
B. S. Zhao and W. Schöllkopf, Nature Nanotechnology 7 (5), 277-278 (2012).
2011
Emerging beam effects in out-of-plane grating diffraction of He atom beams
B. S. Zhao, G. Meijer, W. Schöllkopf, New J. Phys. 13 065017 (2011).
Sanfter Rückprall des zerbrechlichsten aller Moleküle
B. S. Zhao, G. Meijer, W. Schöllkopf, Physik in unserer Zeit 42 (3), 111–112 (2011).
Quantum Reflection of He2 Several Nanometers Above a Grating Surface
B. S. Zhao, G. Meijer, W. Schöllkopf, Science 331, 892 (2011).
2010
Interatomic Coulombic Decay following Photoionization of the Helium Dimer: Observation of Vibrational Structure
T. Havermeier, T. Jahnke, K. Kreidi, R. Wallauer, S. Voss, M. Schöffler, S. Schössler, L. Foucar, N. Neumann, J. Titze, H. Sann, M. Kühnel, J. Voigtsberger, J. H. Morilla, W. Schöllkopf, H. Schmidt-Böcking, R. E. Grisenti, and R. Dörner, Phys. Rev. Lett. 104, 133401 (2010).
Single Photon Double Ionization of the Helium Dimer
T. Havermeier, T. Jahnke, K. Kreidi, R. Wallauer, S. Voss, M. Schöffler, S. Schössler, L. Foucar, N. Neumann, J. Titze, H. Sann, M. Kühnel, J. Voigtsberger, A. Malakzadeh, N. Sisourat, W. Schöllkopf, H. Schmidt-Böcking, R. E. Grisenti, and R. Dörner, Phys. Rev. Lett. 104, 153401 (2010).
Emerging Beam Resonances in Atom Diffraction from a Reflection Grating
B. S. Zhao, G. Meijer, W. Schöllkopf, Phys. Rev. Lett. 104, 240404 (2010).
Coherent reflection of He atom beams from rough surfaces at near-grazing incidence
B. S. Zhao, H. C. Schewe, G. Meijer, W. Schöllkopf, Phys. Rev. Lett. 105, 133203 (2010).
Angular distributions of photoelectrons and interatomic-Coulombic-decay electrons from helium dimers: Strong dependence on the internuclear distance
T. Havermeier, K. Kreidi, R. Wallauer, S. Voss, M. Schöffler, S. Schössler, L. Foucar, N. Neumann, J. Titze, H. Sann, M. Kühnel, J. Voigtsberger, N. Sisourat, W. Schöllkopf, H. Schmidt-Böcking, R. E. Grisenti, R. Dörner, and T. Jahnke, Phys. Rev. A 82, 063405 (2010).
2009
Focusing a helium atom beam using a quantum-reflection mirror
H. C. Schewe, B. S. Zhao, G. Meijer and W. Schöllkopf, New J. Phys. 11, 113030 (2009).
2008
Quantum reflection of helium atom beams from a microstructured grating
B. S. Zhao, S. A. Schulz, S. A. Meek, G. Meijer, W. Schöllkopf, Phys. Rev. A 78, 010902R (2008).
Publications on ultracold atoms
ac electric trapping of neutral atoms
S. Schlunk, A. Marian, W. Schöllkopf, and G. Meijer, Phys. Rev. A 77, 043408 (2008).
Trapping of Rb Atoms by ac Electric Fields
S. Schlunk, A. Marian, P. Geng, A. P. Mosk, G. Meijer, and W. Schöllkopf, Phys. Rev. Lett. 98, 223002 (2007).
Earlier publications on matter-wave optics
Observation of mixed fermionic-bosonic helium clusters by transmission grating diffraction
Kalinin, O. Kornilov, W. Schöllkopf, and J. P. Toennies, Phys. Rev. Lett. 95, 113402 (2005).
Time-of-Flight Resolved Transmission-Grating Diffraction of Molecular Beams
W. Schöllkopf, R. E. Grisenti, and J. P. Toennies, Eur. Phys. J. D 28, 125 (2004).
The formation of dimers and trimers in free jet 4He cryogenic expansions
L. W. Bruch, W. Schöllkopf, and J. P. Toennies, J. Chem. Phys. 117, 1544 (2002).
Determination of the Bond Length and Binding Energy of the Helium Dimer by Diffraction from a Transmission Grating
R. E. Grisenti, W. Schöllkopf, J. P. Toennies, G. C. Hegerfeldt, T. Köhler, and M. Stoll, Phys. Rev. Lett. 85, 2284 (2000).
He-atom diffraction from nanostructure transmission gratings: The role of imperfections
R. E. Grisenti, W. Schöllkopf, J. P. Toennies, J. R. Manson, T. A. Savas, and H. I. Smith, Phys. Rev. A 61, 033608 (2000).
Determination of atom-surface van der Waals potentials from transmission-grating diffraction intensities
R. E. Grisenti, W. Schöllkopf, J. P. Toennies, G. C. Hegerfeldt, and T. Köhler, Phys. Rev. Lett. 83, 1755 (1999).
A cluster size nanofilter with variable openings between 2 and 50 nm
W. Schöllkopf, J. P. Toennies, T. A. Savas, and H. I. Smith, J. Chem. Phys. 109, 9252 (1998).
The nondestructive detection of the helium dimer and trimer
W. Schöllkopf and J. P. Toennies, J. Chem. Phys. 104, 1155 (1996).
Nondestructive mass selection of small van der Waals clusters
W. Schöllkopf and J. P. Toennies, Science 266, 1345 (1994).