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Stephan Schlemmer

Stephan Schlemmer

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 68 6596 5978 481 432 389 15054

Stephan Schlemmer publications per year

The chart shows the history of publications by Stephan Schlemmer between 1988 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Stephan Schlemmer published across 39 years, from 1988 to 2026, averaging 12.2 papers a year. Output peaked at 44 publications in 2010. 13 of the 476 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1988 to 2026. Vertical axis: number of publications, 0 to 44. Peak 44 publications in 2010. 1988: 2 publications 1989: 0 publications 1990: 0 publications 1991: 1 publication 1992: 0 publications 1993: 3 publications 1994: 3 publications 1995: 1 publication 1996: 2 publications 1997: 1 publication 1998: 1 publication 1999: 3 publications 2000: 1 publication 2001: 3 publications 2002: 6 publications 2003: 2 publications 2004: 4 publications 2005: 8 publications 2006: 15 publications 2007: 13 publications 2008: 12 publications 2009: 18 publications 2010: 44 publications 2011: 17 publications 2012: 11 publications 2013: 11 publications 2014: 14 publications 2015: 23 publications 2016: 20 publications 2017: 26 publications 2018: 27 publications 2019: 40 publications 2020: 24 publications 2021: 27 publications 2022: 36 publications 2023: 33 publications 2024: 11 publications 2025: 9 publications 2026: 4 publications
1988 2026

476 publications in total across all disciplines

View publications per year as a table
Stephan Schlemmer: publications per year, 1988 to 2026
Year Publications
1988 2
1989 0
1990 0
1991 1
1992 0
1993 3
1994 3
1995 1
1996 2
1997 1
1998 1
1999 3
2000 1
2001 3
2002 6
2003 2
2004 4
2005 8
2006 15
2007 13
2008 12
2009 18
2010 44
2011 17
2012 11
2013 11
2014 14
2015 23
2016 20
2017 26
2018 27
2019 40
2020 24
2021 27
2022 36
2023 33
2024 11
2025 9
2026 4
Total 476
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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.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 381–400 publications, is where this scientist sits. 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
61–80 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.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459 389
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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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.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 68–69 D-Index, is where this scientist sits. 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
40–41 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.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683 68
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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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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