Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 1.361 Scientists Citation Rankings - 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.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
scientific parallel computing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
127,727
20,635
0.162
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Conservation Biology
Ecology
Invasion Biology
Biogeography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
109,033
24,813
0.228
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Relativistic heavy ion physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
89,540
41,316
0.461
* Total Citation Counts Rankings
Ranking Based On Selection: 4
fatigue
fracture
high entropy alloys
neutron and synchrotron diffraction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
86,697
52,322
0.604
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Atomic resolution imaging and analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83,366
36,631
0.439
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Power Electronics
Power Systems.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
81,481
45,604
0.560
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Phsyics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75,992
16,101
0.212
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Biorefining
Green Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,947
38,810
0.525
* Total Citation Counts Rankings
Ranking Based On Selection: 9
thermoelectrics
magnetism
superconductivity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,215
9,967
0.236
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Materials Science
Nuclear Materials
Radiation Effects
Ion Beam Modification
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,658
14,804
0.364
* Total Citation Counts Rankings
Ranking Based On Selection: 11
power electronics
renewable energy
electric vehicles
wide band gap power electronics
electrical engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,853
12,531
0.323
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Crystal growth
materials physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,242
21,983
0.575
* Total Citation Counts Rankings
Ranking Based On Selection: 13
global change
ecology
forestry
carbon dioxide
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36,871
10,885
0.295
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Condensed matter physics
materials science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,058
8,653
0.254
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Landscape ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,225
7,386
0.229
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,061
7,398
0.231
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Materials Science and Engineering
Radiation Effects
Nuclear Materials
Structural Materials
Transmission Electron Microscopy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,128
13,740
0.441
* Total Citation Counts Rankings
Ranking Based On Selection: 18
synthetic biology
plant molecular biology and genetics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,151
11,059
0.367
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Viral Immunology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,103
4,550
0.151
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Power Electronics
Motor Drives
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,052
4,855
0.162
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Earth and Planetary Sciences
Lunar
Diamond
Diamond Inclusions
Mantle
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,638
8,683
0.293
* Total Citation Counts Rankings
Ranking Based On Selection: 22
bioremediation
microbial ecology
climate change
systems Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,605
10,119
0.342
* Total Citation Counts Rankings
Ranking Based On Selection: 23
power electronics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,533
13,187
0.447
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Particle Physics
Nuclear Physics
Computational Physics
Experimental Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,691
27,254
0.950
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Environemental Biotechnology
Microbiology Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,413
4,199
0.153
* Total Citation Counts Rankings
Rankings
2,000
914
1
Ranking Based On Selection: 1
Jack Dongarra
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
127,727
20,635
0.162
* Total Citation Counts Rankings
Rankings
2,727
1,293
2
Ranking Based On Selection: 2
Daniel Simberloff
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
109,033
24,813
0.228
Conservation Biology
Ecology
Invasion Biology
Biogeography
* Total Citation Counts Rankings
Rankings
3,970
1,883
3
Ranking Based On Selection: 3
Christine Nattrass
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
89,540
41,316
0.461
* Total Citation Counts Rankings
Rankings
4,169
1,972
4
Ranking Based On Selection: 4
Peter Liaw
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
86,697
52,322
0.604
fatigue
fracture
high entropy alloys
neutron and synchrotron diffraction
* Total Citation Counts Rankings
Rankings
4,449
2,115
5
Ranking Based On Selection: 5
Stephen Pennycook
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83,366
36,631
0.439
* Total Citation Counts Rankings
Rankings
4,656
2,210
6
Ranking Based On Selection: 6
Fei Fred Wang
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
81,481
45,604
0.560
Power Electronics
Power Systems.
* Total Citation Counts Rankings
Rankings
5,239
2,469
7
Ranking Based On Selection: 7
Y Efremenko
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75,992
16,101
0.212
* Total Citation Counts Rankings
Rankings
5,479
2,597
8
Ranking Based On Selection: 8
Arthur J Ragauskas|Arthur Jonas Ragauskas
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,947
38,810
0.525
* Total Citation Counts Rankings
Rankings
13,481
6,365
9
Ranking Based On Selection: 9
Brian Sales
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,215
9,967
0.236
* Total Citation Counts Rankings
Rankings
14,328
6,754
10
Ranking Based On Selection: 10
William J Weber
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,658
14,804
0.364
Materials Science
Nuclear Materials
Radiation Effects
Ion Beam Modification
* Total Citation Counts Rankings
Rankings
15,403
7,252
11
Ranking Based On Selection: 11
Leon M Tolbert
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,853
12,531
0.323
power electronics
renewable energy
electric vehicles
wide band gap power electronics
electrical engineering
* Total Citation Counts Rankings
Rankings
15,799
7,423
12
Ranking Based On Selection: 12
J Q Yan
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,242
21,983
0.575
Crystal growth
materials physics
* Total Citation Counts Rankings
Rankings
16,717
7,837
13
Ranking Based On Selection: 13
Richard Norby
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36,871
10,885
0.295
global change
ecology
forestry
carbon dioxide
* Total Citation Counts Rankings
Rankings
18,915
8,792
14
Ranking Based On Selection: 14
Takeshi Egami
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,058
8,653
0.254
Condensed matter physics
materials science
* Total Citation Counts Rankings
Rankings
20,618
9,526
15
Ranking Based On Selection: 15
Virginia Dale
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,225
7,386
0.229
* Total Citation Counts Rankings
Rankings
20,778
9,600
16
Ranking Based On Selection: 16
WM Post
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,061
7,398
0.231
* Total Citation Counts Rankings
Rankings
21,736
10,035
17
Ranking Based On Selection: 17
Steven Zinkle
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,128
13,740
0.441
Materials Science and Engineering
Radiation Effects
Nuclear Materials
Structural Materials
Transmission Electron Microscopy
* Total Citation Counts Rankings
Rankings
22,885
10,545
18
Ranking Based On Selection: 18
C Neal Stewart Jr
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,151
11,059
0.367
synthetic biology
plant molecular biology and genetics
* Total Citation Counts Rankings
Rankings
22,949
10,574
19
Ranking Based On Selection: 19
Barry T Rouse
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,103
4,550
0.151
* Total Citation Counts Rankings
Rankings
23,016
10,608
20
Ranking Based On Selection: 20
Bimal K Bose
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,052
4,855
0.162
Power Electronics
Motor Drives
* Total Citation Counts Rankings
Rankings
23,532
10,850
21
Ranking Based On Selection: 21
Lawrence A Taylor
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,638
8,683
0.293
Earth and Planetary Sciences
Lunar
Diamond
Diamond Inclusions
Mantle
* Total Citation Counts Rankings
Rankings
23,583
10,871
22
Ranking Based On Selection: 22
Terry Hazen
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,605
10,119
0.342
bioremediation
microbial ecology
climate change
systems Engineering
* Total Citation Counts Rankings
Rankings
23,676
10,913
23
Ranking Based On Selection: 23
Fred Wang
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,533
13,187
0.447
* Total Citation Counts Rankings
Rankings
24,668
11,332
24
Ranking Based On Selection: 24
Himal Acharya
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,691
27,254
0.950
Particle Physics
Nuclear Physics
Computational Physics
Experimental Physics
* Total Citation Counts Rankings
Rankings
26,380
12,072
25
Ranking Based On Selection: 25
Gary Sayler
University of Tennessee Knoxville
Knoxville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,413
4,199
0.153
Environemental Biotechnology
Microbiology Ecology