World's Best Scientists 2026 revealed!
Stephan Schlemmer

Stephan Schlemmer

D-Index & Metrics

Chemistry

D-Index
68
Citations
15054
World Ranking
6596
National Ranking
481

Stephan Schlemmer publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Stephan Schlemmer sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 389 publications — 79th percentile

79% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Stephan Schlemmer D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Stephan Schlemmer sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 68 D-Index — 64th percentile

64% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

Stephan Schlemmer is affiliated with the University of Cologne in Germany and has contributed extensively to the fields of Chemistry and Physics and Astronomy. Their academic work spans a wide range of topics, with notable emphasis on Molecular Spectroscopy and Structure, Advanced Chemical Physics Studies, Atmospheric Ozone and Climate, Spectroscopy and Laser Applications, Astrophysics and Star Formation Studies, Quantum Superfluid Helium Dynamics, and Mass Spectrometry Techniques and Applications.

The scientist has published numerous articles in prominent venues, reflecting a sustained focus on spectroscopy and related disciplines. Frequent publication venues include:

  • Journal of Molecular Spectroscopy
  • Proceedings of the 2021 International Symposium on Molecular Spectroscopy
  • Proceedings of the 2022 International Symposium on Molecular Spectroscopy
  • Astronomy and Astrophysics
  • Proceedings of the 2020 International Symposium on Molecular Spectroscopy

Some of the recent papers authored or coauthored by Stephan Schlemmer cover a variety of topics and publication years:

  • A Decade with VAMDC: Results and Ambitions, 2020, Atoms
  • Formation of the methyl cation by photochemistry in a protoplanetary disk, 2023, Nature
  • Leak-Out Spectroscopy, A Universal Method of Action Spectroscopy in Cold Ion Traps, 2022, The Journal of Physical Chemistry A
  • Laboratory spectroscopy techniques to enable observations of interstellar ion chemistry, 2020, Nature Reviews Physics
  • Discovery of H2CCCH+ in TMC-1, 2023, Astronomy and Astrophysics

Collaborations have played a significant role in their research, with frequent coauthors including:

  • Oskar Asvany
  • Sven Thorwirth
  • Frank Lewen
  • H. S. P. Müller
  • Thomas Salomon

Stephan Schlemmer's subfields of study reflect a specialized focus within broader research areas:

  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Atmospheric Science
  • Astronomy and Astrophysics
  • Electrical and Electronic Engineering

The scope of their work integrates atmospheric sciences and astrophysical phenomena with molecular and atomic physics approaches. This interdisciplinary involvement is apparent in the thematic spread of their publications and the venues in which these works appear, illustrating ongoing contributions to understanding molecular behaviors and spectroscopic techniques relevant to chemical physics and astronomy.

Best Publications

  • The Cologne Database for Molecular Spectroscopy, CDMS, in the Virtual Atomic and Molecular Data Centre, VAMDC

    Christian P. Endres;Stephan Schlemmer;Peter Schilke;Jürgen Stutzki

  • A KInetic Database for Astrochemistry (KIDA)

    V. Wakelam;V. Wakelam;E. Herbst;E. Herbst;J. C Loison;J. C Loison;I. W. M. Smith

  • THE 2014 KIDA NETWORK FOR INTERSTELLAR CHEMISTRY

    V. Wakelam;J. C. Loison;E. Herbst;B. Pavone

  • The Cologne Database for Molecular Spectroscopy, CDMS

    H. S. P. Müller;S. Schlemmer;J. Stutzki

  • A molecular beam study of the evaporation of water from a liquid jet

    M. Faubel;S. Schlemmer;J. P. Toennies

  • Competition between CO and N-2 desorption from interstellar ices

    K. I. Öberg;F. van Broekhuizen;H. J. Fraser;S. E. Bisschop

  • H3(+) + H2 isotopic system at low temperatures: microcanonical model and experimental study.

    Edouard Hugo;Oskar Asvany;Stephan Schlemmer

  • Understanding the infrared spectrum of bare CH5

    Oskar Asvany;Padma Kumar P;Britta Redlich;Ilka Hegemann

  • PHOTODESORPTION OF CO ICE

    Karin I. Öberg;Guido W. Fuchs;Zainab Awad;Helen J. Fraser

  • Virtual Atomic and Molecular Data Centre

    M.L. Dubernet;M.L. Dubernet;V. Boudon;J.L. Culhane;M.S. Dimitrijevic

  • Interstellar OH+, H2O+ and H3O+ along the sight-line to G10.6-0.4

    Maryvonne Gerin;M. De Luca;John Black;Eric Herbst

  • Desorption rates and sticking coefficients for CO and N2 interstellar ices

    S. E. Bisschop;H. J. Fraser;K. I. Öberg;E. F. van Dishoeck

  • Interstellar OH+, H2O+ and H3O+ along the sight-line to G10.6–0.4

    M. Gerin;M. De Luca;J. Black;J. R. Goicoechea

  • Herschel/HIFI observations of interstellar OH+ and H2O+ towards W49N: a probe of diffuse clouds with a small molecular fraction

    D. A. Neufeld;J. R. Goicoechea;P. Sonnentrucker;J. H. Black

  • Herschel observations of EXtra-Ordinary Sources: the present and future of spectral surveys with Herschel/HIFI

    E. A. Bergin;T. G. Phillips;C. Comito;N. R. Crockett

  • The virtual atomic and molecular data centre (VAMDC) consortium

    M. L. Dubernet;B. K. Antony;Y. A. Ba;Yu L. Babikov

  • Exploring molecular complexity with ALMA (EMoCA): Alkanethiols and alkanols in Sagittarius B2(N2)

    H. S. P. Müller;A. Belloche;L.-H. Xu;R. M. Lees

  • Herschel observations of EXtra-Ordinary Sources (HEXOS): the present and future of spectral surveys with Herschel/HIFI.

    E. A. Bergin;T. G. Phillips;C. Comito;N. R. Crockett

  • Laser excited N2+ in a 22-pole ion trap:

    S. Schlemmer;T. Kuhn;E. Lescop;D. Gerlich

  • Exploring molecular complexity with ALMA (EMoCA): Alkanethiols and alkanols in Sagittarius B2(N2)

    Holger S. P. Müller;Arnaud Belloche;Li-Hong Xu;Ronald M. Lees

Frequent Co-Authors

Peter Schilke
Peter Schilke University of Cologne
Karl M. Menten
Karl M. Menten Max Planck Society
Emmanuel Caux
Emmanuel Caux Federal University of Toulouse Midi-Pyrénées
Eric Herbst
Eric Herbst University of Virginia
Thomas G. Phillips
Thomas G. Phillips California Institute of Technology
J. Stutzki
J. Stutzki University of Cologne
Javier R. Goicoechea
Javier R. Goicoechea Spanish National Research Council
David A. Neufeld
David A. Neufeld Johns Hopkins University
José Cernicharo
José Cernicharo Spanish National Research Council
Paul F. Goldsmith
Paul F. Goldsmith California Institute of Technology

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