Photoemission Orbital Tomography (POT)

2026

"Multi-Orbital Charge Transfer into Nonplanar Cycloarenes Revealed with CO-Functionalized STM Tips"

A. Haags, A. Reichmann, Z. Ruan, Q. Fan, L. Egger, H. Kirschner, T. Naumann, S. Werner, O. Kleykamp, J. Martinez Castro, F. Lüpke,
F.C. Bocquet, C. Kumpf, S. Soubatch, A. Gottwald, G. Koller, M.G. Ramsey, M. Richter, J. Sundermeyer, P. Puschnig, J.M. Gottfried,
F.S. Tautz and S. Wenzel
The journal of physical chemistry letters 17(5), 1296–1304 (2026) [10.1021/acs.jpclett.5c03268]

2025

"Highly Structure‐Selective On‐Surface Synthesis of Isokekulene Versus Kekulene"

Z. Ruan, Q. Fan, A. Reichmann, F. Kang, T. Naumann, S. Werner, O. Kleykamp, J. Martinez-Castro, F. Lüpke, A. Haags,
F.C. Bocquet, C. Kumpf, S. Soubatch, J. Sundermeyer,P.; Puschnig, F.S. Tautz, J.M. Gottfried and S. Wenzel
Angewandte Chemie / International edition 64(36), e202509932 (2025) [10.1002/anie.202509932]

"Tomographic identification of all molecular orbitals in a wide binding-energy range"

A. Haags, D. Brandstetter, X. Yang, L. Egger, H. Kirschner, A. Gottwald, M. Richter, G. Koller, F.C. Bocquet, C. Wagner,
M.G. Ramsey, S. Soubatch, P. Puschnig and F.S. Tautz
Physical review B 111(16), 165402 (2025) [10.1103/PhysRevB.111.165402]

2023

"Coherent and Incoherent Excitation Pathways in Time-Resolved Photoemission Orbital Tomography of CuPc/Cu(001)-2O"

A. Adamkiewicz, M. Raths, M. Stettner, M. Theilen, L. Münster, S. Wenzel, M. Hutter, S. Soubatch, C. Kumpf, F.C. Bocquet,
R. Wallauer, F.S. Tautz, and U. Höfer
The journal of physical chemistry C 127(41), 20411 - 20418 (2023) [10.1021/acs.jpcc.3c04859]

"Simple extension of the plane-wave final state in photoemission: Bringing understanding to the photon-energy dependence of two-dimensional materials"

C.S. Kern, A. Haags, L. Egger, X. Yang, H. Kirschner, S. Wolff, T. Seyller, A. Gottwald, M. Richter, U. De Giovannini, A. Rubio,
M.G. Ramsey, F.C. Bocquet, S. Soubatch, F.S. Tautz, P. Puschnig, and S. Moser
Physical review research 5(3), 033075 (2023) [10.1103/PhysRevResearch.5.033075] Editor's suggestion

2022

"Large Distortion of Fused Aromatics on Dielectric Interlayers Quantified by Photoemission Orbital Tomography"

P. Hurdax, C.S. Kern, T.G. Boné, A. Haags, M. Hollerer, L. Egger, X. Yang, H. Kirschner, A. Gottwald, M. Richter, F.C. Bocquet,
S. Soubatch, G. Koller, F.S. Tautz, M. Sterrer, P. Puschnig and M.G. Ramsey
ACS nano 16(10), 17435 - 17443 (2022) [10.1021/acsnano.2c08631]

"Momentum-selective orbital hybridisation"

X. Yang, M. Jugovac, G. Zamborlini, V. Feyer, G. Koller, P. Puschnig, S. Soubatch, M.G. Ramsey and F.S. Tautz
Nature Communications 13(1), 5148 (2022) [10.1038/s41467-022-32643-z]

"Momentum space imaging of σ orbitals for chemical analysis"

A. Haags, X. Yang, L. Egger, D. Brandstetter, H. Kirschner, F.C. Bocquet, G. Koller, A. Gottwald, M. Richter, J..M. Gottfried,
M.G. Ramsey, P. Puschnig, S. Soubatch and F.S. Tautz
Science advances 8(29), eabn0819 (2022) [10.1126/sciadv.abn0819]

"Hexacene on Cu(110) and Ag(110): Influence of the Substrate on Molecular Orientation and Interfacial Charge Transfer"

M.S. Sättele, A. Windischbacher, K. Greulich, L. Egger, A. Haags, H. Kirschner, R. Ovsyannikov, E. Giangrisostomi, A. Gottwald,
M. Richter, S. Soubatch, F.S. Tautz, M.G. Ramsey, P. Puschnig, G. Koller, H.F. Bettinger, T. Chassé and H.Peisert
The journal of physical chemistry C 126(10), 5036 - 5045 (2022) [10.1021/acs.jpcc.2c00081]

2021

"Charge‐Promoted Self‐Metalation of Porphyrins on an Oxide Surface"

L. Egger, M. Hollerer, C.S. Kern, H. Herrmann, P. Hurdax, A. Haags, X. Yang, A. Gottwald, M. Richter, S. Soubatch, F.S. Tautz,
G. Koller, P. Puschnig, M.G. Ramsey and M. Sterrer
Angewandte Chemie International edition 60(10), 5078 - 5082 (2021) [10.1002/anie.202015187]

"Going beyond Pentacene: Photoemission Tomography of a Heptacene Monolayer on Ag(110)"

M.S. Sättele, A. Windischbacher, L. Egger, A. Haags, P. Hurdax, H. Kirschner, A. Gottwald, M. Richter, F. Posseik, S. Soubatch,
F.S. Tautz, H.F. Bettinger, H. Peisert, T. Chassé, M.G. Ramsey, P. Puschnig and G. Koller
The journal of physical chemistry C 125(5), 2918 - 2925 (2021) [10.1021/acs.jpcc.0c09062]

"kMap.py: A Python program for simulation and data analysis in photoemission tomography"

D. Brandstetter, X. Yang, D. Lüftner, F.S. Tautz and P. Puschnig
Computer physics communications 263, 107905 - (2021) [10.1016/j.cpc.2021.107905]

"Tracing orbital images on ultrafast time scales"

R. Wallauer, M. Raths, K. Stallberg, L. Münster, D. Brandstetter, X. Yang, J. Güdde, P. Puschnig, S. Soubatch, C. Kumpf,
F.C. Bocquet, F.S. Tautz and U. Höfer
Science 371(6533), 1056 - 1059 (2021) [10.1126/science.abf3286]

2020

"Controlling the electronic and physical coupling on dielectric thin films"

P. Hurdax, M. Hollerer, L. Egger, G. Koller, X. Yang, A. Haags, S. Soubatch, F.S. Tautz, M. Richter, A. Gottwald, P. Puschnig,
M. Sterrer and M.G. Ramsey
Beilstein journal of nanotechnology 11, 1492 - 1503 (2020) [10.3762/bjnano.11.132]

"Kekulene: On-Surface Synthesis, Orbital Structure, and Aromatic Stabilization"

A. Haags, A. Reichmann, Q. Fan, L. Egger, H. Kirschner, T. Naumann, S. Werner, T. Vollgraff, J. Sundermeyer, L. Eschmann, X. Yang, D. Brandstetter, F.C. Posseik, G. Koller, A. Gottwald, M. Richter, M.G. Ramsey, M. Rohlfing, P. Puschnig, J.M. Gottfried, S. Soubatch and F.S. Tautz
ACS nano 14(11), 15766 - 15775 (2020) [10.1021/acsnano.0c06798]

2019

"Coexisting Charge States in a Unary Organic Monolayer Film on a Metal"

X. Yang, L. Egger, J. Fuchsberger, M. Unzog, D. Lüftner, F. Hajek, P. Hurdax, M. Jugovac, G. Zamborlini, V. Feyer, G. Koller, P. Puschnig, F.S. Tautz, M.G. Ramsey and S. Soubatch
The journal of physical chemistry letters 10(21), 6438 - 6445 (2019) [10.1021/acs.jpclett.9b02231]

"Identifying surface reaction intermediates with photoemission tomography"

X. Yang, L. Egger, P. Hurdax, H. Kaser, D. Lüftner, F.C. Bocquet, G. Koller, A. Gottwald, P. Tegeder, M. Richter, M.G. Ramsey, P. Puschnig, S. Soubatch and F.S. Tautz
Nature Communications 10(1), 3189 (2019) [10.1038/s41467-019-11133-9]

"Can photoemission tomography be useful for small, strongly-interacting adsorbate systems?"

L. Egger, B. Kollmann, P. Hurdax, D. Lüftner, X. Yang, S. Weiss, A. Gottwald, M. Richter, G. Koller, S. Soubatch, F.S. Tautz, P. Puschnig
and M.G. Ramsey
New journal of physics 21(4), 043003 - (2019) [10.1088/1367-2630/ab0781]

J. Felter, J. Wolters, F.C. Bocquet, F. S. Tautz, and C. Kumpf
J. Phys.: Condens. Matter 31, 114003 (2019) [10.1088/1361-648X/aafc45]

"Momentum microscopy on the micrometer scale: Photoemission micro-tomography applied to single molecular domains"

2018

"On the decoupling of molecules at metal surfaces"

X. Yang, I. Krieger, D. Lüftner, S. Weiß, T. Heepenstrick, M. Hollerer, P. Hurdax, G. Koller, M. Sokolowski, P. Puschnig, M.G. Ramsey,
F.S. Tautz and S. Soubatch
Chemical communications 54(65), 9039 - 9042 (2018) [10.1039/C8CC03334J]