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Citation Rankings
Highly Cited Researchers

Highly Cited Researchers 1.565 Scientists Citation Rankings (Sort by last 6 years Citation Index) - 2025

The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

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Total 1.565 scientists
* Last 6 Years Citation Counts Rankings
World Rank
36
Country Rank
2
Institution Rank: 1
Ranking Based On Selection: 1
Germany
Christian M Ringle
Christian M Ringle
Technische Universität Hamburg Harburg
Hamburg , Germany
Business & Management / Strategic Management
Decision Sciences
Business Analytics
Multivariate Analysis Methods
Machine Learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
292,857
222,591
0.760
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
845
Country Rank
29
Institution Rank: 1
Ranking Based On Selection: 2
Germany
Roman Schnabel
Roman Schnabel
Universität Hamburg
Hamburg , Germany
Natural Sciences / Physics
quantum physics
gravitational-wave detection
squeezed light
entanglement
quantum optics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
141,263
87,742
0.621
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
1,473
Country Rank
46
Institution Rank: 2
Ranking Based On Selection: 3
Germany
Mikhail Korobko
Mikhail Korobko
Universität Hamburg
Hamburg , Germany
Natural Sciences / Physics
Gravitational-Wave Detectors
Squeezed light
Entanglement
Optomechanics
Quantum Optics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
97,489
70,011
0.718
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
2,348
Country Rank
81
Institution Rank: 3
Ranking Based On Selection: 4
Germany
Bernd Löwe
Bernd Löwe
Universität Hamburg
Hamburg , Germany
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83,033
52,892
0.637
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
4,345
Country Rank
170
Institution Rank: 4
Ranking Based On Selection: 5
Germany
Klaus Pantel
Klaus Pantel
Universität Hamburg
Hamburg , Germany
Others
Krebsforschung
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
94,547
36,264
0.384
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
5,986
Country Rank
246
Institution Rank: 5
Ranking Based On Selection: 6
Germany
Renate Schnabel
Renate Schnabel
Universität Hamburg
Hamburg , Germany
Medical and Health Sciences / Cardiology
Cardiology
Internal Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,056
29,708
0.606
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
6,950
Country Rank
280
Institution Rank: 6
Ranking Based On Selection: 7
Germany
Nicolaus Kröger
Nicolaus Kröger
Universität Hamburg
Hamburg , Germany
Others
Stammzelltransplantation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,912
26,922
0.509
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
8,870
Country Rank
363
Institution Rank: 7
Ranking Based On Selection: 8
Germany
Wolfgang Parak
Wolfgang Parak
Universität Hamburg
Hamburg , Germany
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
66,879
23,135
0.346
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
10,196
Country Rank
429
Institution Rank: 8
Ranking Based On Selection: 9
Germany
Christian Büchel
Christian Büchel
Universität Hamburg
Hamburg , Germany
Others
Pain Fear Networks Modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,047
21,165
0.290
See All Rankings and Analysis

Showcase your academic strength and achievements to the world in the most effective way – join now and achieve results fast!

* Last 6 Years Citation Counts Rankings
World Rank
11,445
Country Rank
475
Institution Rank: 9
Ranking Based On Selection: 10
Germany
Tanja Zeller
Tanja Zeller
Universität Hamburg
Hamburg , Germany
Medical and Health Sciences / Cardiology
Cardiology
Genomic and System Biology
Biomarker
Cardiovascular Research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,017
19,648
0.504
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
12,500
Country Rank
541
Institution Rank: 10
Ranking Based On Selection: 11
Germany
Stefan Kluge
Stefan Kluge
Universität Hamburg
Hamburg , Germany
Medical and Health Sciences / Intensive Care
Intensive Care Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,714
18,505
0.749
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
12,596
Country Rank
547
Institution Rank: 11
Ranking Based On Selection: 12
Germany
Volkmar Müller
Volkmar Müller
Universität Hamburg
Hamburg , Germany
Others
breast cancer
brain metastases
translational research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,276
18,413
0.522
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
13,726
Country Rank
590
Institution Rank: 12
Ranking Based On Selection: 13
Germany
Martin Härter
Martin Härter
Universität Hamburg
Hamburg , Germany
Social Sciences / Psychology
Health Services Research
Patient-centred Care
Mental Health
Guideline Implementation
Shared Decision-Making
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,198
17,372
0.508
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
14,284
Country Rank
619
Institution Rank: 13
Ranking Based On Selection: 14
Germany
Ulrike Ravens-Sieberer
Ulrike Ravens-Sieberer
Universität Hamburg
Hamburg , Germany
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,756
16,916
0.436
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
15,434
Country Rank
668
Institution Rank: 14
Ranking Based On Selection: 15
Germany
Steffen Moritz
Steffen Moritz
Universität Hamburg
Hamburg , Germany
Others
mental health
self-help
schizophrena
OCD
BFRB
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,096
16,053
0.457
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
16,887
Country Rank
732
Institution Rank: 15
Ranking Based On Selection: 16
Germany
Jürgen Gallinat
Jürgen Gallinat
Universität Hamburg
Hamburg , Germany
Others
neurotransmission
schizophrenia
severe mental disorders
complex care models
peer involvement
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,564
15,128
0.403
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
16,956
Country Rank
738
Institution Rank: 16
Ranking Based On Selection: 17
Germany
Alexander Lichtenstein
Alexander Lichtenstein
Universität Hamburg
Hamburg , Germany
Natural Sciences / Physics
Electronic structure
Magnetism
Strongly Correlated Electron Systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,263
15,098
0.300
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
18,276
Country Rank
801
Institution Rank: 17
Ranking Based On Selection: 18
Germany
Andreas K. Engel
Andreas K. Engel
Universität Hamburg
Hamburg , Germany
Others
Cognitive Neuroscience
Systems Neuroscience
Neurophysiology
Oscillations
Connectivity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,988
14,355
0.271
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
18,357
Country Rank
805
Institution Rank: 18
Ranking Based On Selection: 19
Germany
Glatzel, M
Glatzel, M
Universität Hamburg
Hamburg , Germany
Medical and Health Sciences / Pathology
Neuroscience
Dementia
Prions
Alzheimer
Neuropathology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,231
14,304
0.567
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
19,430
Country Rank
855
Institution Rank: 19
Ranking Based On Selection: 20
Germany
Daniel Lüdecke
Daniel Lüdecke
Universität Hamburg
Hamburg , Germany
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,736
13,781
0.935
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
19,813
Country Rank
876
Institution Rank: 20
Ranking Based On Selection: 21
Germany
Dirk Westermann
Dirk Westermann
Universität Hamburg
Hamburg , Germany
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,348
13,598
0.582
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
23,409
Country Rank
1,045
Institution Rank: 21
Ranking Based On Selection: 22
Germany
Aepfelbacher, M.
Aepfelbacher, M.
Universität Hamburg
Hamburg , Germany
Medical and Health Sciences / Medical Microbiology
Cellular and Molecular Microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,290
12,171
0.501
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
23,932
Country Rank
1,058
Institution Rank: 22
Ranking Based On Selection: 23
Germany
Christian Gerloff
Christian Gerloff
Universität Hamburg
Hamburg , Germany
Medical and Health Sciences / Neurology
Neurology
Stroke
Neuroplasticity
Neuronal Networks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,553
12,010
0.338
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
24,983
Country Rank
1,110
Institution Rank: 23
Ranking Based On Selection: 24
Germany
Roland Wiesendanger
Roland Wiesendanger
Universität Hamburg
Hamburg , Germany
Natural Sciences / Physics
Nanophysics
Magnetism
Surface Physics
Low Temperature Physics
Topological Matter
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,852
11,666
0.254
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
World Rank
27,375
Country Rank
1,207
Institution Rank: 24
Ranking Based On Selection: 25
Germany
Jan Recker
Jan Recker
Universität Hamburg
Hamburg , Germany
Business & Management / Business Administration
Information Systems
Digital Innovation
Green IS
Conceptual Modeling
Business Process Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,479
10,989
0.489
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
36
Germany
2
1
Ranking Based On Selection: 1
Christian M Ringle
Christian M Ringle
Technische Universität Hamburg Harburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
292,857
222,591
0.760
Business & Management / Strategic Management
Decision Sciences
Business Analytics
Multivariate Analysis Methods
Machine Learning
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
845
Germany
29
1
Ranking Based On Selection: 2
Roman Schnabel
Roman Schnabel
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
141,263
87,742
0.621
Natural Sciences / Physics
quantum physics
gravitational-wave detection
squeezed light
entanglement
quantum optics
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
1,473
Germany
46
2
Ranking Based On Selection: 3
Mikhail Korobko
Mikhail Korobko
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
97,489
70,011
0.718
Natural Sciences / Physics
Gravitational-Wave Detectors
Squeezed light
Entanglement
Optomechanics
Quantum Optics
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
2,348
Germany
81
3
Ranking Based On Selection: 4
Bernd Löwe
Bernd Löwe
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83,033
52,892
0.637
Others
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
4,345
Germany
170
4
Ranking Based On Selection: 5
Klaus Pantel
Klaus Pantel
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
94,547
36,264
0.384
Others
Krebsforschung
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
5,986
Germany
246
5
Ranking Based On Selection: 6
Renate Schnabel
Renate Schnabel
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,056
29,708
0.606
Medical and Health Sciences / Cardiology
Cardiology
Internal Medicine
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
6,950
Germany
280
6
Ranking Based On Selection: 7
Nicolaus Kröger
Nicolaus Kröger
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,912
26,922
0.509
Others
Stammzelltransplantation
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
8,870
Germany
363
7
Ranking Based On Selection: 8
Wolfgang Parak
Wolfgang Parak
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
66,879
23,135
0.346
Others
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
10,196
Germany
429
8
Ranking Based On Selection: 9
Christian Büchel
Christian Büchel
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,047
21,165
0.290
Others
Pain Fear Networks Modelling
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
11,445
Germany
475
9
Ranking Based On Selection: 10
Tanja Zeller
Tanja Zeller
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,017
19,648
0.504
Medical and Health Sciences / Cardiology
Cardiology
Genomic and System Biology
Biomarker
Cardiovascular Research
See All Rankings and Analysis

Showcase your academic strength and achievements to the world in the most effective way – join now and achieve results fast!

* Last 6 Years Citation Counts Rankings
Rankings
12,500
Germany
541
10
Ranking Based On Selection: 11
Stefan Kluge
Stefan Kluge
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,714
18,505
0.749
Medical and Health Sciences / Intensive Care
Intensive Care Medicine
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
12,596
Germany
547
11
Ranking Based On Selection: 12
Volkmar Müller
Volkmar Müller
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,276
18,413
0.522
Others
breast cancer
brain metastases
translational research
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
13,726
Germany
590
12
Ranking Based On Selection: 13
Martin Härter
Martin Härter
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,198
17,372
0.508
Social Sciences / Psychology
Health Services Research
Patient-centred Care
Mental Health
Guideline Implementation
Shared Decision-Making
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
14,284
Germany
619
13
Ranking Based On Selection: 14
Ulrike Ravens-Sieberer
Ulrike Ravens-Sieberer
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,756
16,916
0.436
Others
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
15,434
Germany
668
14
Ranking Based On Selection: 15
Steffen Moritz
Steffen Moritz
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,096
16,053
0.457
Others
mental health
self-help
schizophrena
OCD
BFRB
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
16,887
Germany
732
15
Ranking Based On Selection: 16
Jürgen Gallinat
Jürgen Gallinat
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,564
15,128
0.403
Others
neurotransmission
schizophrenia
severe mental disorders
complex care models
peer involvement
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
16,956
Germany
738
16
Ranking Based On Selection: 17
Alexander Lichtenstein
Alexander Lichtenstein
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,263
15,098
0.300
Natural Sciences / Physics
Electronic structure
Magnetism
Strongly Correlated Electron Systems
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
18,276
Germany
801
17
Ranking Based On Selection: 18
Andreas K. Engel
Andreas K. Engel
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,988
14,355
0.271
Others
Cognitive Neuroscience
Systems Neuroscience
Neurophysiology
Oscillations
Connectivity
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
18,357
Germany
805
18
Ranking Based On Selection: 19
Glatzel, M
Glatzel, M
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,231
14,304
0.567
Medical and Health Sciences / Pathology
Neuroscience
Dementia
Prions
Alzheimer
Neuropathology
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
19,430
Germany
855
19
Ranking Based On Selection: 20
Daniel Lüdecke
Daniel Lüdecke
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,736
13,781
0.935
Others
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
19,813
Germany
876
20
Ranking Based On Selection: 21
Dirk Westermann
Dirk Westermann
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,348
13,598
0.582
Others
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
23,409
Germany
1,045
21
Ranking Based On Selection: 22
Aepfelbacher, M.
Aepfelbacher, M.
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,290
12,171
0.501
Medical and Health Sciences / Medical Microbiology
Cellular and Molecular Microbiology
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
23,932
Germany
1,058
22
Ranking Based On Selection: 23
Christian Gerloff
Christian Gerloff
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,553
12,010
0.338
Medical and Health Sciences / Neurology
Neurology
Stroke
Neuroplasticity
Neuronal Networks
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
24,983
Germany
1,110
23
Ranking Based On Selection: 24
Roland Wiesendanger
Roland Wiesendanger
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,852
11,666
0.254
Natural Sciences / Physics
Nanophysics
Magnetism
Surface Physics
Low Temperature Physics
Topological Matter
See All Rankings and Analysis
* Last 6 Years Citation Counts Rankings
Rankings
27,375
Germany
1,207
24
Ranking Based On Selection: 25
Jan Recker
Jan Recker
Universität Hamburg Hamburg, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,479
10,989
0.489
Business & Management / Business Administration
Information Systems
Digital Innovation
Green IS
Conceptual Modeling
Business Process Management
See All Rankings and Analysis