Total 2,424,675 scientists, country 221, and institutions 24,468 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
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* Total i10 IndexRankings
Ranking Based On Selection: 1
![Mikhail G Brik](https://cdn.adscientificindex.com/pictures/8d/1459246.jpg)
Optical Materials
Rare Earth and Transition Metal Ions
Luminescence
Ab initio Calculations
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
352
218
0.619
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Marco Kirm](/user/assets/images/profile/no-profile-photo.png)
luminescence
VUV spectroscopy
solid state physics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
170
49
0.288
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Aleksandr Lushchik](https://cdn.adscientificindex.com/pictures/72/1447925.jpg)
Physics: radiation physics and spectroscopy of wide gap materials
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
117
61
0.521
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Vladimir Hizhnyakov](https://cdn.adscientificindex.com/pictures/a3/1482629.jpg)
solid state theory
condensed matter physics
quantum optics
nonlinear optics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
83
15
0.181
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Dmitry Spassky](https://cdn.adscientificindex.com/pictures/64/1584056.jpg)
luminescence
scintillators
inorganic phosphors
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
80
51
0.638
* Total i10 IndexRankings
Ranking Based On Selection: 6
![João Luís Rosa](https://cdn.adscientificindex.com/pictures/3d/4535049.jpg)
Gravitation
Cosmology
Black-holes
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
33
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 7
![María José Guzmán|María José Guzmán, Maria-Jose Guzman](https://cdn.adscientificindex.com/pictures/9e/4483851.jpg)
General relativity
teleparallel gravity
constrained Hamiltonian systems
numerical relativity
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
20
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 8
![Helle Kaasik](https://cdn.adscientificindex.com/pictures/d3/4848581.jpg)
physics
psychology
religious studies
ayahuasca
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
4
0.364
* Total i10 IndexRankings
Ranking Based On Selection: 9
![Shishir Sankhyayan](https://cdn.adscientificindex.com/pictures/dc/6038851.jpg)
Cosmology
Structure Formation
Large Scale Structure
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
6
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 10
![Laxmipriya Pati](https://cdn.adscientificindex.com/pictures/18/5982278.jpg)
Theoretical physics
Applying cosmology in modified theories of gravity
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
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* Total i10 IndexRankings
Ranking Based On Selection: 11
![Meeri Lembinen](/user/assets/images/profile/no-profile-photo.png)
Physics
Material Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 12
![Mats Mikkor](/user/assets/images/profile/no-profile-photo.png)
Physics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 13
![Elena Vinogradova](/user/assets/images/profile/no-profile-photo.png)
Optical spectroscopy
Quantum Computing
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
Mikhail G Brik
University of Tartu
Tartu, Estonia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
352
218
0.619
Optical Materials
Rare Earth and Transition Metal Ions
Luminescence
Ab initio Calculations
Marco Kirm
University of Tartu
Tartu, Estonia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
170
49
0.288
luminescence
VUV spectroscopy
solid state physics
Aleksandr Lushchik
University of Tartu
Tartu, Estonia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
117
61
0.521
Physics: radiation physics and spectroscopy of wide gap materials
Vladimir Hizhnyakov
University of Tartu
Tartu, Estonia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
83
15
0.181
solid state theory
condensed matter physics
quantum optics
nonlinear optics
Dmitry Spassky
University of Tartu
Tartu, Estonia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
80
51
0.638
luminescence
scintillators
inorganic phosphors
João Luís Rosa
University of Tartu
Tartu, Estonia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
33
1.000
María José Guzmán|María José Guzmán, Maria-Jose Guzman
University of Tartu
Tartu, Estonia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
20
1.000
General relativity
teleparallel gravity
constrained Hamiltonian systems
numerical relativity
Helle Kaasik
University of Tartu
Tartu, Estonia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
4
0.364
physics
psychology
religious studies
ayahuasca
Shishir Sankhyayan
University of Tartu
Tartu, Estonia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
6
1.000
Cosmology
Structure Formation
Large Scale Structure
Laxmipriya Pati
University of Tartu
Tartu, Estonia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
Theoretical physics
Applying cosmology in modified theories of gravity
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Meeri Lembinen
University of Tartu
Tartu, Estonia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
Mats Mikkor
University of Tartu
Tartu, Estonia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
Elena Vinogradova
University of Tartu
Tartu, Estonia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0