2026 Kookrin Char: Materials Science Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Materials Science	58	7711	7453	323	320	313	11760

Kookrin Char publication distribution in Materials Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Materials Science in 2026. The highlighted bar marks where Kookrin Char sits on this spectrum.

50 publications 1,163+

This scientist: 313 publications — 63rd percentile

63% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,163 publications or more.

Kookrin Char D-index placement in Materials Science in 2026

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

40 D-Index 165+

This scientist: 58 D-Index — 41st percentile

41% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 165 D-Index or more.

Research.com Recognitions

2018 - Fellow of American Physical Society (APS) Citation For sustained and groundbreaking research in advancing both synthesis and understanding of perovskite oxide epitaxial films and devices, including cupratebased Josephson junctions, tunable titanate dielectrics, and highmobility stannate semiconductors

Overview

Kookrin Char is affiliated with Seoul National University in South Korea. Their research spans multiple fields focused primarily on materials science and engineering, with a significant focus on materials chemistry and electrical and electronic engineering.

Their work covers several subfields, including electronic, optical and magnetic materials, biomedical engineering, and condensed matter physics. The main topics of their research include:

Electronic and Structural Properties of Oxides
Semiconductor materials and devices
Magnetic and transport properties of perovskites and related materials
ZnO doping and properties
Ferroelectric and Negative Capacitance Devices
Advanced X-ray and CT Imaging
Ferroelectric and Piezoelectric Materials

The frequent publication venues for Kookrin Char's research are varied, reflecting a focus on applied physics and materials science, including:

Applied Physics Letters
Advanced Electronic Materials
ACS Applied Electronic Materials
Physical Review Applied
Advanced Materials Interfaces

Some of the recent papers authored or co-authored by Kookrin Char include:

"Thin film transistors based on ultra-wide bandgap spinel ZnGa2O4" (2020), published in Applied Physics Letters
"High-Mobility Field-Effect Transistor Using 2-Dimensional Electron Gas at the LaScO₃/BaSnO₃ Interface" (2021), published in ACS Applied Electronic Materials
"Deep-UV Transparent Conducting Oxide La-Doped SrSnO₃ with a High Figure of Merit" (2022), published in ACS Applied Electronic Materials
"High- k perovskite gate oxide for modulation beyond 10¹⁴ cm⁻²" (2022), published in Science Advances
"Melt Growth and Physical Properties of Bulk LaInO₃ Single Crystals" (2021), published in physica status solidi (a)

Kookrin Char collaborates frequently with several researchers, including:

Hyeongmin Cho
Juhan Kim
Bongju Kim
Jaehyeok Lee
Seonghyeon Kim

Their recognized contributions in the field include receiving the Fellow of the American Physical Society (APS) award in 2018, cited for research on perovskite oxide epitaxial films and devices, cuprate-based Josephson junctions, tunable titanate dielectrics, and high-mobility stannate semiconductors.

Best Publications

Synthesis and Magnetic Studies of Uniform Iron Nanorods and Nanospheres

Sang-Jae Park;Seungsoo Kim;Suyoun Lee;Zheong G. Khim

751
Citations
Upper critical field, fluctuation conductivity, and dimensionality of YBa2Cu3O7-x.

B. Oh;K. Char;A. D. Kent;M. Naito

535
Citations
High Mobility in a Stable Transparent Perovskite Oxide

Hyung Joon Kim;Useong Kim;Hoon Min Kim;Tai Hoon Kim

462
Citations
Bi‐epitaxial grain boundary junctions in YBa2Cu3O7

K. Char;M. S. Colclough;S. M. Garrison;N. Newman

409
Citations
Physical properties of transparent perovskite oxides (Ba,La)SnO 3 with high electrical mobility at room temperature

Hyung Joon Kim;Useong Kim;Tai Hoon Kim;Jiyeon Kim

353
Citations
Local, nonvolatile electronic writing of epitaxial Pb(Zr0.52Ti0.48)O3/SrRuO3 heterostructures

C. H. Ahn;T. Tybell;T. Tybell;L. Antognazza;L. Antognazza;K. Char;K. Char

335
Citations
Critical thickness of ultrathin ferroelectric BaTiO3 films

Y. S. Kim;D. H. Kim;J. D. Kim;Y. J. Chang

299
Citations
Flux focusing effects in planar thin‐film grain‐boundary Josephson junctions

Peter A. Rosenthal;M. R. Beasley;K. Char;M. S. Colclough

274
Citations
Ordered-defect structure in epitaxial YBa2Cu3O7-x thin films.

A. F. Marshall;R. W. Barton;K. Char;A. Kapitulnik

269
Citations
Monolithic 77 K dc SQUID magnetometer

L. P. Lee;K. Char;M. S. Colclough;G. Zaharchuk

256
Citations
High carrier mobility in transparent Ba1−xLaxSnO3 crystals with a wide band gap

X. Luo;Y. S. Oh;A. Sirenko;P. Gao

207
Citations
High Tc superconductor‐normal‐superconductor Josephson junctions using CaRuO3 as the metallic barrier

K. Char;M. S. Colclough;T. H. Geballe;K. E. Myers

200
Citations
Properties of interface-engineered high Tc Josephson junctions

Unknown

191
Citations
Reactive magnetron sputtering of thin‐film superconductor YBa2Cu3O7−x

K. Char;A. D. Kent;A. Kapitulnik;M. R. Beasley

188
Citations
Extension of the bi‐epitaxial Josephson junction process to various substrates

K. Char;M. S. Colclough;L. P. Lee;G. Zaharchuk

181
Citations
Study of interface resistances in epitaxial YBa2Cu3O7−x/barrier/YBa2Cu3O7−x junctions

K. Char;L. Antognazza;T. H. Geballe

179
Citations
Properties of Y-Ba-Cu-O thin films with ordered defect structure: Y2Ba4Cu8O20-x.

K. Char;Mark Lee;R. W. Barton;A. F. Marshall

178
Citations
Growth of high Tc superconducting thin films using molecular beam epitaxy techniques

C. Webb;S. L. Weng;James N Eckstein;N. Missert

172
Citations
Optical measurements on oriented thin YBa 2 Cu 3 O 7-δ films: Lack of evidence for excitonic superconductivity

I. Bozovic;I. Bozovic;D. Kirillov;D. Kirillov;A. Kapitulnik;A. Kapitulnik;K. Char;K. Char

155
Citations
Thermal boundary resistance for YBa2Cu3O7−δ films

M. Nahum;S. Verghese;P. L. Richards;K. Char

153
Citations
Perpendicular magnetic anisotropy and strong magneto‐optic properties of SrRuO3 epitaxial films

L. Klein;J. S. Dodge;T. H. Geballe;A. Kapitulnik

144
Citations