Kolja Them

426 total citations
15 papers, 308 citations indexed

About

Kolja Them is a scholar working on Atomic and Molecular Physics, and Optics, Molecular Biology and Biomedical Engineering. According to data from OpenAlex, Kolja Them has authored 15 papers receiving a total of 308 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Atomic and Molecular Physics, and Optics, 6 papers in Molecular Biology and 6 papers in Biomedical Engineering. Recurrent topics in Kolja Them's work include Characterization and Applications of Magnetic Nanoparticles (6 papers), Geomagnetism and Paleomagnetism Studies (6 papers) and Advanced NMR Techniques and Applications (5 papers). Kolja Them is often cited by papers focused on Characterization and Applications of Magnetic Nanoparticles (6 papers), Geomagnetism and Paleomagnetism Studies (6 papers) and Advanced NMR Techniques and Applications (5 papers). Kolja Them collaborates with scholars based in Germany, Russia and Switzerland. Kolja Them's co-authors include Tobias Knopp, Michael G. Kaul, Caroline Jung, Franziska Werner, Martin Hofmann, Johannes Salamon, Nadine Gdaniec, Harald Ittrich, Gerhard Adam and Annika vom Scheidt and has published in prestigious journals such as PLoS ONE, Analytical Chemistry and Scientific Reports.

In The Last Decade

Kolja Them

14 papers receiving 303 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Kolja Them Germany	8	250	193	69	47	38	15	308
Thilo Wawrzik Germany	9	286 1.1×	197 1.0×	67 1.0×	46 1.0×	3 0.1×	15	305
Marlitt Erbe Germany	10	375 1.5×	300 1.6×	68 1.0×	72 1.5×	5 0.1×	22	394
Kumar Sarthak United States	7	450 1.8×	278 1.4×	18 0.3×	16 0.3×	42 1.1×	7	564
Laurette C. McCormick Canada	10	389 1.6×	137 0.7×	27 0.4×	6 0.1×	10 0.3×	14	469
H. Ishida Japan	9	67 0.3×	75 0.4×	68 1.0×	6 0.1×	19 0.5×	17	214
Claude Desruisseaux Canada	9	382 1.5×	132 0.7×	39 0.6×	5 0.1×	13 0.3×	14	460
Brandon R. Bruhn United States	3	371 1.5×	126 0.7×	15 0.2×	12 0.3×	8 0.2×	5	398
Shao-Chuang Liu China	13	427 1.7×	215 1.1×	9 0.1×	20 0.4×	17 0.4×	20	532
Irina Schiopu Romania	12	435 1.7×	225 1.2×	9 0.1×	7 0.1×	15 0.4×	22	504
P.J. Cregg Ireland	10	196 0.8×	45 0.2×	87 1.3×	5 0.1×	6 0.2×	17	296

Countries citing papers authored by Kolja Them

Since Specialization

Citations

This map shows the geographic impact of Kolja Them's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Kolja Them with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kolja Them more than expected).

Fields of papers citing papers by Kolja Them

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kolja Them. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Kolja Them. The network helps show where Kolja Them may publish in the future.

Co-authorship network of co-authors of Kolja Them

This figure shows the co-authorship network connecting the top 25 collaborators of Kolja Them. A scholar is included among the top collaborators of Kolja Them based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Kolja Them. Kolja Them is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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15 of 15 papers shown

Them, Kolja, et al.. (2025). Chemically induced deceleration of nuclear spin relaxation (CIDER) preserves hyperpolarization. Science Advances. 11(37). eadx2316–eadx2316.

Salnikov, Oleg G., Nikita V. Chukanov, Andrey N. Pravdivtsev, et al.. (2025). Heteronuclear Parahydrogen‐Induced Hyperpolarization via Side Arm Hydrogenation. ChemPhysChem. 26(13). e202401119–e202401119. 3 indexed citations

Them, Kolja, et al.. (2024). Nuclear spin polarization of lactic acid via exchange of parahydrogen-polarized protons. Communications Chemistry. 7(1). 172–172. 3 indexed citations

Salnikov, Oleg G., Andrey N. Pravdivtsev, Kolja Them, et al.. (2022). Through-Space Multinuclear Magnetic Resonance Signal Enhancement Induced by Parahydrogen and Radiofrequency Amplification by Stimulated Emission of Radiation. Analytical Chemistry. 94(43). 15010–15017. 17 indexed citations

Pravdivtsev, Andrey N., Kolja Them, Olga Will, et al.. (2022). Performance and reproducibility of 13C and 15N hyperpolarization using a cryogen-free DNP polarizer. Scientific Reports. 12(1). 11694–11694. 19 indexed citations

Them, Kolja. (2017). On magnetic dipole–dipole interactions of nanoparticles in magnetic particle imaging. Physics in Medicine and Biology. 62(14). 5623–5639. 21 indexed citations

Them, Kolja, Johannes Salamon, Patryk Szwargulski, et al.. (2016). Increasing the sensitivity for stem cell monitoring in system-function based magnetic particle imaging. Physics in Medicine and Biology. 61(9). 3279–3290. 44 indexed citations

Werner, Franziska, Caroline Jung, Martin Hofmann, et al.. (2016). Geometry planning and image registration in magnetic particle imaging using bimodal fiducial markers. Medical Physics. 43(6Part1). 2884–2893. 14 indexed citations

Salamon, Johannes, Martin Hofmann, Caroline Jung, et al.. (2016). Magnetic Particle / Magnetic Resonance Imaging: In-Vitro MPI-Guided Real Time Catheter Tracking and 4D Angioplasty Using a Road Map and Blood Pool Tracer Approach. PLoS ONE. 11(6). e0156899–e0156899. 68 indexed citations

10.

Knopp, Tobias, Kolja Them, Michael G. Kaul, & Nadine Gdaniec. (2015). Joint reconstruction of non-overlapping magnetic particle imaging focus-field data. Physics in Medicine and Biology. 60(8). L15–L21. 46 indexed citations

11.

Them, Kolja, Michael G. Kaul, Caroline Jung, et al.. (2015). Sensitivity Enhancement in Magnetic Particle Imaging by Background Subtraction. IEEE Transactions on Medical Imaging. 35(3). 893–900. 56 indexed citations

12.

Them, Kolja, E. Y. Vedmedenko, Klaus Fredenhagen, & R. Wiesendanger. (2015). Bounds on expectation values of quantum subsystems and perturbation theory. Journal of Physics A Mathematical and Theoretical. 48(7). 75301–75301. 3 indexed citations

13.

Them, Kolja. (2014). Applications of the C*-algebraic reformulation of Quantum Statistical Mechanics to the description of experimentally investigated spin systems. 2 indexed citations

14.

Them, Kolja. (2014). Towards experimental tests and applications of Lieb-Robinson bounds. Physical Review A. 89(2). 7 indexed citations

15.

Them, Kolja, et al.. (2013). Non-equilibrium finite temperature dynamics of magnetic quantum systems: applications to spin-polarized scanning tunneling microscopy. New Journal of Physics. 15(1). 13009–13009. 5 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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