Research into carbon systems forms one of his main enduring interests, with contributions being made in the fields of conducting and semiconducting polymers, fullerenes, nanotubes, diamond, diamond-like carbon, and graphene. His other main field of activity is directed towards the study of the electronic structure of superconductors such as transition metal carbides and nitrides, A15 compounds, cuprates, intercalated fullerenes, borocarbides, cobaltades and Fe-pnictides. Further work is related to electronic structure studies of simple metals, low dimensional systems and 3d transition metal compounds. Very recently, he has started work on the spin dependent lifetime of electronic states in magnetic systems such as Ni, Co, Fe and permaloy as well as on topological materials.

D.V. Potorochin, R. Kurleto, O.J. Clark, E.D.L. Rienks, J. Sanchez-Barriga, F. Roth, V. Voroshnin, A. Fedorov, W. Eberhardt, B. Büchner, J. Fink, Lifetime of quasiparticles in the nearly free electron metal sodium, Phys. Rev. B 106, 125138 (2022)

J. Bannies, E. Razzoli, M. Michiardi, H.-H. Kung, I.S. Elfimov, M. Yao, A. Fedorov, J. Fink, C. Jozwiak, A. Bostwick, E. Rotenberg, A. Damascelli, C. Felser, Extremely large magnetoresistance from electron-hole compensation in the nodal-loop semimetal ZrP₂, Phys. Rev. B 103, 155144 (2021)

J. Fink, E.D.L. Rienks, M. Yao, R. Kurleto, J. Bannies, S. Aswartham, I. Morozov, S. Wurmehl, T. Wolf, F. Hardy, C. Meingast, H.S. Jeevan, J. Maiwald, P. Gegenwart, C. Felser, B Büchner, Linkage between scattering rates and superconductivity in doped ferropnictides, Phys. Rev. B 103, 155119 (2021)

Yu Pan, Mengyu Yao, Xiaochen Hong, Yifan Zhu, Fengren Fan, Kazuki Imasato, Yangkun He, Christian Hess, Jörg Fink, Jiong Yang, Bernd Büchner, Chenguang Fu, G Jeffrey Snyder, Claudia Felser, Mg₃(Bi, Sb)₂ single crystals towards high thermoelectric performance, Energy & Environmental Science 13, 1717 ( 2020)

Friedrich Roth, Alexandre Revcolevschi, Bernd Büchner,  Martin Knupfer, and Jörg Fink , Evidence for an orbital dependent Mott transition in the ladders of (La, Ca)_xSr_14−xCu₂₄O₄₁ derived by electron energy loss spectroscopy. Phys. Rev. B 101, 195132 (2020).

Mengyu Yao, Kaustuv Manna, Qun Yang, Alexander Fedorov, Vladimir Voroshnin,
B. Valentin Schwarze, Jacob Hornung, S. Chattopadhyay, Zhe Sun, Satya N. Guin, Jochen Wosnitza,
Horst Borrmann, Chandra Shekhar, Nitesh Kumar, Jörg Fink, Yan Sun & Claudia Felser .Observation of giant spin-split Fermi-arc with maximal Chern number in the chiral topological semimetal PtGa. Nature Commun. 11, 2033 (2020)

Nitesh Kumar, Mengyu Yao, Jayita Nayak, Maia G. Vergniory, Jörn Bannies, Zhijun Wang,
Niels B. M. Schröter, Vladimir N. Strocov, Lukas Müchler, Wujun Shi, Emile D. L. Rienks,
J. L. Mañes, Chandra Shekhar, Stuart S. P. Parkin, Jörg Fink, Gerhard H. Fecher, Yan Sun,
B. Andrei Bernevig, and Claudia Felser, Signatures of Sixfold Degenerate Exotic Fermions
in a Superconducting Metal PdSb₂  , Adv. Mater.  32, 1906046 (2020).

J. Fink, J. Nayak, E. D. L. Rienks, J. Bannies, S. Wurmehl, S. Aswartham, I. Morozov, R. Kappenberger, M. A. ElGhazali, L. Craco, H. Rosner, C. Felser, and B. Büchner, Evidence of hot and cold spots on the Fermi surface of LiFeAs, Phys. Rev. B 99, 245156 (2019).

J. Sanchez-Barriga, R. Ovsyannikov, and J. Fink, Strong Spin dependence of Correlation effects in Ni due to Stoner excitations, Phys. Rev. Lett. 121, 267201 (2018).

Jayita Nayak, Kai Filsinger, Gerhard H. Fecher, Stanislav Chadov, Jan Minar, Emile D. L. Rienks, Bernd Büchner, Stuart P. Parkin, Jörg Fink, and Claudia Felser, Observation of a remarkable reduction of correlation effects in BaCr₂As₂ by ARPES. PNAS (2017)doi: 10.1073/pnas.1702234114.

J. Fink, E.D.L. Rienks, S. Thirupathaiah, J. Nayak, A. van Roekeghem, S. Biermann, T. Wolf, P. Adelmann, H.S. Jeevan, P. Gegenwart, S.Wurmehl, C. Felser, B. Büchner.Experimental evidence for importance of Hund’s exchange interaction for incoherence of charge carriers in iron-based superconductors. Phys. Rev. B 95, 144513 (2017).

Jayita Nayak, Shu-Chun Wu, Nitesh Kumar, Chandra Shekhar, Sanjay Singh, Jörg Fink, Emile E.D. Rienks, Gerhard H. Fecher, Stuart S.P. Parkin, Binghai Yan & Claudia Felser. Multiple Dirac cones at the surface of thetopological metal LaBi. Nature Commun. 8, 13942 (2017)

I. Avigo, S. Thirupathaiah, E. D. L. Rienks, L. Rettig, A. Charnukha, M. Ligges, R. Cortes, J. Nayak ,H. S. Jeevan, T. Wolf, Y. Huang, S. Wurmehl, M. I. Sturza, P. Gegenwart, M. S. Golden, L. X. Yang, K. Rossnagel, M. Bauer, B. Bu¨ chner, M. Vojta, M. Wolf, C. Felser, J. Fink, and U. Bovensiepen. Electronic structure and ultrafastdynamics of FeAs-basedsuperconductors by angle- andtime-resolved. Phys. Status Solidi B 254, 1600382 (2017).

M. Zwiebler, E. Schierle, E. Weschke, B. Büchner, A. Revcolevschi, Patrick Ribeiro, J. Geck, and J. Fink,Stripe order of La_1.65 Eu_0.2 Sr_0.16 CuO₄ in magnetic fields studied by resonant soft x-ray scattering, Phys. Rev. B 94, 165157 (2016).

S. Thirupathaiah, Soumi Ghosh, Rajveer Jha, E. D. L. Rienks, Kapildeb Dolui, V. V. Ravi Kishore, B. Büchner, Tanmoy Das, V. P. S. Awana, D. D. Sarma, and J. Fink,Unusual Dirac Fermions on the Surface of a Noncentrosymmetric α-BiPd Superconductor,Phys. Rev. Lett. 117, 177001 (2016)

A Sanna , A V Fedorov , N I Verbitskiy , J Fink , C Krellner , L Petaccia , A Chikina , D Yu Usachov , A Grüneis and G Profeta,First-principles and angle-resolvedphotoemission study of lithium doped metallic black phosphorous, 2D Mat.3, 025031 (2016)

I. Avigo , S. Thirupathaiah , M. Ligges , T.Wolf , J. Fink and U. Bovensiepen,Doping dependence and electron–boson coupling in the ultrafast relaxation of hot electron populations in Ba(Fe_1–xCox)₂As₂ ,New J. Phys. 18 093028(2016)

J. Fink, Influence of Lifshitz transitions and correlation effects on the scattering rates of the charge carriers in iron-based superconductors, EPL 113, 27002 (2016)

J. Fink, A. Charnukha, E. D. L. Rienks, Z. H. Liu, S. Thirupathaiah, I. Avigo, F. Roth, H. S. Jeevan, P. Gegenwart, M. Roslova, I. Morozov, S. Wurmehl, U. Bovensiepen, S. Borisenko, M. Vojta, and B. Büchner, Non-Fermi-liquid scattering rates and anomalous band dispersion in ferropnictides, Phsical Review B 92, 201106 (R) (2015).

E. D. L. Rienks, M. Ärrälä, M. Lindroos, F. Roth, W. Tabis, G. Yu, M. Greven, and J. Fink, High-Energy Anomaly in the Angle-Resolved Photoemission Spectra of Nd_2−xCe_xCuO₄: Evidence for a Matrix Element Effect. Phys. Rev. Lett. 113, 137001 (2014)

A.V. Fedorov, N.I. Verbitskiy, D. Haberer, C. Struzzi, L. Petaccia, D. Usachov, O.Y. Vilkov, D.V. Vyalikh, J. Fink, M. Knupfer, B. Büchner & A. Grüneis,Observation of a universal donor-dependent vibrational mode in graphene, Nature Communications 5, 3257 (2014)

L. X. Yang, G. Rohde, T. Rohwer, A. Stange, K. Hanff, C. Sohrt, L. Rettig, R. Cortés, F. Chen, D. L. Feng, T. Wolf, B. Kamble, I. Eremin, T. Popmintchev, M. M. Murnane, H. C. Kapteyn, L. Kipp, J. Fink, M. Bauer, U. Bovensiepen, and K. Rossnagel, Ultrafast Modulation of the Chemical Potential in BaFe₂As₂ by Coherent Phonons, Phys. Rev. Lett. 112, 207001(2014)

J. Fink, E. Schierle, E. Weschke, and J. Geck, Resonant elastic soft X-ray scattering, Rep. Prog.Phys. 76, 056502 (2013)

L. Rettig, R. Cortes, S. Thirupathaiah, P. Gegenwart, H. S. Jeevan, M. Wolf, J. Fink, and U. Bovensiepen, Ultrafast Momentum-Dependent Response of Electrons in Antiferromagnetic EuFe₂As₂ Driven by Optical Excitation, Phys. Rev. Lett. 108, 097002 (2012)

P. D. C. King, R. C. Hatch, M. Bianchi, R. Ovsyannikov, C. Lupulescu, G. Landolt,5 B. Slomski, J. H. Dil, D. Guan, J. L. Mi, E. D. L. Rienks, J. Fink, A. Lindblad, S. Svensson, S. Bao, G. Balakrishnan, B. B. Iversen, J. Osterwalder, W. Eberhardt, F. Baumberger, and Ph. Hofmann, Large Tunable Rashba Spin Splitting of a Two-Dimensional Electron Gas in Bi₂Se₃, Phys. Rev. Lett. 107, 096802 (2011)

S. Thirupathaiah, E. D. L. Rienks, H. S. Jeevan, R. Ovsyannikov, E. Slooten, J. Kaas, E. van Heumen, S. de Jong, H. A. Dürr, K. Siemensmeyer, R. Follath, P. Gegenwart, M. S. Golden, and J. Fink, Dissimilarities between the electronic structure of chemically doped and chemically pressurized iron pnictides from an angle-resolved photoemission spectroscopy study, Phys. Rev. B 84, 014531 (2011)

J. Sanchez-Barriga, J. Fink, V. Boni, I. Di Marco, J. Braun, J. Minar, A. Varykhalov, O. Rader, V. Bellini, F. Manghi, H. Ebert, M. I. Katsnelson, A. I. Lichtenstein, O. Eriksson, W. Eberhardt, and H. A. Dürr Strength of Correlation Effects in the Electronic Structure of Iron. Phys. Rev. Lett. 103, 267203 (2009)

Jörg Fink, Enrico Schierle, Eugen Weschke, Jochen Geck, David Hawthorn, Viktor Soltwisch, Hiroki Wadati, Hsueh-Hung Wu, Hermann A. Dürr, Nadja Wizent, Bernd Büchner, and George A. Sawatzky, Charge ordering in La_1.8−xEu_0.2Sr_xCuO₄studied by resonant soft x-ray diffraction, Phys. Rev. B 79, 100502 (R) (2009)

T. Dahm, V. Hinkov, S.V. Borisenko, A.A. Kordyuk, V.B. Zabolotnyy, J. Fink, B. Buechner, D.J. Scalapino, W. Hanke, B. Keimer Strength of the spin-fluctuation-mediated pairing interaction in a high-temperature superconductor, Nature Physics 5, 217 (2009)

C. Kramberger, R. Hambach, C. Giorgetti, M. H. Ruemmeli, M. Knupfer, J. Fink, B. Buechner, Lucia Reining, E. Einarsson, S. Maruyama, F. Sottile, K. Hannewald, V. Olevano, V. Marinopoulos, T. Pichler. Linear plasmon dispersion in single-wall carbon nanotubes and the collective excitation spectrum of graphene. Phys. Rev. Lett. 100, 196803 (2008)

J. Fink, S. Borisenko, A. Kordyuk, A. Koitzsch, J. Geck, V. Zabolotnyy, M. Knupfer, B. Büchner, and H. Berger, Dressing of the Charge Carriers in High-T_c Superconductors, Lect. Notes Phys. 715, 295 (2007)

H. Rauf, T. Pichler, M. Knupfer, J. Fink, H. Kataura Transition from a Tomonaga-Luttinger Liquid to a Fermi Liquid in Potassium-Intercalated Bundles of Single-Wall Carbon Nanotubes, Phys. Rev. Lett. 93, 96805 (2004)

S.V. Borisenko, A.A. Kordyuk, A. Koitzsch, T.K. Kim, K. Nanko, M. Knupfer, J. Fink,
C. Grazioli, S. Turckini, and H. Berger Circular dichroism in angle-resolved photoemission spectra of under- and overdoped Pb-Bi2212, Phys. Rev. Lett. 92, 207001 (2004)

T.K. Kim, A.A. Kordyuk, S.V. Borisenko, A. Koitzsch, M. Knupfer, H. Berger, J. Fink Doping dependence of the mass enhancement in (Pb, Bi)₂Sr₂CaCu₂O₈ at the antinodal point in the superconducting and normal state, Phys. Rev. Lett. 91, 187002 (2003)

A.A. Kordyuk, S.V. Borisenko, T.K. Kim, K.A. Nenkov, M. Knupfer, J. Fink, M.S. Golden, H. Berger, R. Follath Origin of the peak-dip-hump line shape in the superconducting state (pi, 0) photoemission spectra of Bi₂Sr₂CaCu₂O₈, Phys. Rev. Lett. 89, 77003 (2002)

J. Fink, and P. Lambin, Electron spectroscopy studies of carbon nanotubes, in: "Carbon Nanotubes" ed. by Dresselhaus, M.S.; Dresselhaus, G.; Avouris, Ph., Topics in Applied Physics, Springer-Verlag Berlin, 80, 247 (2001)

S. V. Borisenko, M. S. Golden, S. Legner, T. Pichler, C. Dürr, M. Knupfer, J. Fink, G. Yang, S. Abell, and H. Berger, Joys and pitfalls of Fermi surface mapping in Bi₂Sr₂CaCu₂O_8+d using angle resolved photoemission, Phys. Rev. Lett. 84, 4453, (2000)

O. Jost, A.A. Gorbunov, W. Pompe, T. Pichler, R. Friedlein, M. Knupfer, M. Reibold, H.D. Bauer, L. Dunsch, M.S. Golden, J. Fink, Diameter grouping in bulk samples of single-walled carbon nanotubes from optical absorption spectroscopy, Appl. Phys. Lett. 57, 2217 (1999)

T. Pichler, M. Knupfer, M.S. Golden, J. Fink, A. Rinzler, and R.E. Smalley Localized and delocalized plasmon excitations in single wall carbon nanotubes, Phys. Rev. Lett. 80, 4729 (1998)

J. Fink, N. Nücker, E. Pellegrin, H. Romberg, M. Alexander, and M. Knupfer Electron-Energy Loss and X-Ray Absorption Spectroscopy of Cuprate Superconductors and Related Compounds, J. Electr. Spectr., Rel. Phen. 66, 395 (1994)

M. Knupfer, M. Merkel, M.S. Golden, J. Fink, O. Gunnarsson, and V.P. Antropov Satellites in the photoemission spectra of A3C60 (A = K, Rb). Phys. Rev. B 47, 13944 (1993)

E. Sohmen and J. Fink Electron energy-loss studies of RbxC60 and RbxC70 (x = 0,3, and 6). Phys. Rev. B 47, 14532 (1993)

J. Fink Transmission Electron Energy-Loss Spectroscopy. Topics in Applied Physics Vol. 69 "Unoccupied states" ed. J. Fuggle and J.E. Inglesfield, Springer, Berlin (1992)

H. Romberg, M. Alexander, N. Nücker, P. Adelmann, and J. Fink, Electronic structure of the system La2-xSrxCuO4, Phys. Rev. B 42, 8768 (1990)

Jörg Fink, Recent Development in Energy-Loss Spectroscopy. Ad. Electronics and Electron Physics, Vol. 75, 121 (1989)

A. vom Felde, J. Sprösser-Prou, and J. Fink Valence Electron Excitations in Alkali Metals. Phys. Rev. B 40, 10181 (1989)

N. Nücker, J. Fink, J.C. Fuggle, P.J. Durham, and W. Temmerman Evidence for Holes on Oxygen in the High-Tc Superconductors La_2-xSr_xCuO₄ and YBa₂Cu₃O_7-y. Phys. Rev. B 37, 6827 (1988).

J. Fink and G. Leising Momentum-Dependent Dielectric Functions of Oriented trans-Polyacetylene. Phys. Rev. B 34, 5320 (1986)

J. Fink, Th. Müller-Heinzerling, B. Scheerer, W. Speier, F.U. Hillebrecht, J.C. Fuggle, J. Zaanen, and G.A. Sawatzky The 2p Absorption Spectra of the 3d Elements. Phys. Rev. B 32, 4899 (1985).

J.Fink, Th. Müller-Heinzerling, J. Pflüger, B. Scheerer, B. Dischler, P. Koidl, A. Bubenzer, and R.E. Sah, Investigation of hydrocarbon-plasma-generated carbon films by electron-energy-loss spectroscopy. Phys. Rev. B 30, 4713 (1984).

A. vom Felde, J. Fink, Th. Müller-Heinzerling, J. Pflüger, B. Scheerer, G. Linker, and D. Kaletta Pressure of Neon, Argon and Xenon Bubbles in Aluminium. Phys. Rev. Lett. 53, 922 (1984).

G. Czjzek, J. Fink, F. Götz, H. Schmidt, J.M.D. Coey, J.-P. Reboullat, A. Lienard, Atomic coordination and the distribution of electric field gradients in amorphous solids, Phys. Rev. B 23, 2513 (1981)

J. Fink and P. Kienle, Recoilless γ emission in ¹⁵⁶Gd and ¹⁵⁸Gd following neutron capture reactions, Physics Letters, 17, 326 (1965)