Hiroki Koike

2.1k total citations
100 papers, 1.5k citations indexed

About

Hiroki Koike is a scholar working on Electrical and Electronic Engineering, Materials Chemistry and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Hiroki Koike has authored 100 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 65 papers in Electrical and Electronic Engineering, 22 papers in Materials Chemistry and 19 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Hiroki Koike's work include Semiconductor materials and devices (39 papers), Ferroelectric and Negative Capacitance Devices (26 papers) and Advanced Memory and Neural Computing (20 papers). Hiroki Koike is often cited by papers focused on Semiconductor materials and devices (39 papers), Ferroelectric and Negative Capacitance Devices (26 papers) and Advanced Memory and Neural Computing (20 papers). Hiroki Koike collaborates with scholars based in Japan, Slovenia and Mexico. Hiroki Koike's co-authors include Tetsuo Endoh, Hideo Ohno, Shoji Ikeda, Takahiro Hanyu, H. Honjo, Shuhei Zenno, Kaoru Saigo, R. Jayaraman, Masaru Tanokura and Ajit Kumar and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Applied Physics and Applied and Environmental Microbiology.

In The Last Decade

Hiroki Koike

89 papers receiving 1.4k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Hiroki Koike Japan 19 930 386 266 150 116 100 1.5k
Thomas Zimmer France 20 1.1k 1.2× 263 0.7× 313 1.2× 42 0.3× 153 1.3× 143 1.5k
Takahiro Makino Japan 28 1.8k 1.9× 311 0.8× 1.1k 4.0× 71 0.5× 88 0.8× 178 2.8k
X. Tang United States 12 572 0.6× 740 1.9× 296 1.1× 101 0.7× 26 0.2× 17 1.2k
J. L. Smith United States 18 243 0.3× 725 1.9× 263 1.0× 39 0.3× 118 1.0× 46 1.6k
Yosuke Tanaka Japan 20 792 0.9× 512 1.3× 118 0.4× 9 0.1× 25 0.2× 193 1.5k
Sungmin Hwang South Korea 26 1.2k 1.3× 209 0.5× 314 1.2× 10 0.1× 444 3.8× 166 2.6k
Hirotaka Yamada Japan 13 205 0.2× 123 0.3× 53 0.2× 29 0.2× 89 0.8× 62 519
John E. Ayers United States 18 1.6k 1.8× 895 2.3× 595 2.2× 223 1.5× 45 0.4× 114 2.4k
Daniel L. Barton United States 15 375 0.4× 162 0.4× 109 0.4× 87 0.6× 102 0.9× 45 654
Shengdong Li China 19 411 0.4× 240 0.6× 527 2.0× 6 0.0× 188 1.6× 85 1.7k

Countries citing papers authored by Hiroki Koike

Since Specialization
Citations

This map shows the geographic impact of Hiroki Koike's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Hiroki Koike with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hiroki Koike more than expected).

Fields of papers citing papers by Hiroki Koike

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hiroki Koike. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Hiroki Koike. The network helps show where Hiroki Koike may publish in the future.

Co-authorship network of co-authors of Hiroki Koike

This figure shows the co-authorship network connecting the top 25 collaborators of Hiroki Koike. A scholar is included among the top collaborators of Hiroki Koike based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Hiroki Koike. Hiroki Koike is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Takeda, Satoshi, et al.. (2025). Collapsed energy group structure for analysis of prismatic high-temperature gas-cooled reactor with uranium fuel. Annals of Nuclear Energy. 214. 111238–111238.
2.
Endo, Tomohiro, et al.. (2022). Improvements in Computational Efficiency for Resonance Calculation Using Energy Spectrum Expansion Method. Nuclear Science and Engineering. 196(7). 769–791. 1 indexed citations
3.
Yamamoto, Akio, et al.. (2022). A New Approach for Resonance Treatment of Doubly Heterogeneous Fuel Using the RSE Method. 2042–2051. 1 indexed citations
4.
Endo, Tomohiro, et al.. (2021). A New Resonance Calculation Method Using Energy Expansion Based on a Reduced Order Model. Nuclear Science and Engineering. 195(7). 694–716. 6 indexed citations
5.
Koike, Hiroki, T. Nasuno, Y. Noguchi, et al.. (2020). 40 nm 1T–1MTJ 128 Mb STT-MRAM With Novel Averaged Reference Voltage Generator Based on Detailed Analysis of Scaled-Down Memory Cell Array Design. IEEE Transactions on Magnetics. 57(3). 1–9. 5 indexed citations
6.
Natsui, Masanori, Y. Noguchi, M. Yasuhira, et al.. (2019). A 47.14-$\mu\text{W}$ 200-MHz MOS/MTJ-Hybrid Nonvolatile Microcontroller Unit Embedding STT-MRAM and FPGA for IoT Applications. IEEE Journal of Solid-State Circuits. 54(11). 2991–3004. 41 indexed citations
7.
8.
Koike, Hiroki & István Kovács. (2019). A classification of nilpotent $3$-BCI groups. SHILAP Revista de lepidopterología. 1 indexed citations
9.
Honjo, H., Shoji Ikeda, H. Sato, et al.. (2017). Impact of Tungsten Sputtering Condition on Magnetic and Transport Properties of Double-MgO Magnetic Tunneling Junction With CoFeB/W/CoFeB Free Layer. IEEE Transactions on Magnetics. 53(11). 1–4. 21 indexed citations
10.
11.
Koike, Hiroki, et al.. (2017). Radially and azimuthally dependent resonance self-shielding treatment for general multi-region geometry based on a unified theory. Journal of Nuclear Science and Technology. 55(1). 41–65.
12.
13.
Ronquillo, Wilfredo P., et al.. (2010). Carbon and nitrogen stable isotope analysis using human bones and hair from Philippine burial sites. Kyushu University Institutional Repository (QIR) (Kyushu University). 16. 25–43.
14.
Morimoto, Hiroyuki, Hiroki Koike, & Kazuyuki Nakamura. (2010). An electrically adjustable 3-terminal regulator with post-fabrication level-trimming function. Asia and South Pacific Design Automation Conference. 365–366.
15.
Koike, Hiroki, et al.. (2009). サブグループ法に基づく共鳴計算法の新しい枠組 (1);理論. Transactions of the American Nuclear Society. 100. 647–649. 3 indexed citations
16.
Koike, Hiroki, et al.. (2009). クロオコッカス科6803のSLR1923-不活性化変異体における鍵成分としてのジビニル-クロロフィルA’およびジビニル-フェオフィチンA. Phycologia. 48(4). 98. 2 indexed citations
17.
Yasukochi, Yoshiki, et al.. (2008). Genetic Structure of the Asiatic Black Bear in Japan Using Mitochondrial DNA Analysis. Journal of Heredity. 100(3). 297–308. 33 indexed citations
18.
Amanuma, Kazushi, et al.. (2000). Polarization reversal kinetics of a lead zirconate titanate thin-film capacitor for nonvolatile memory. Journal of Applied Physics. 88(6). 3445–3447. 13 indexed citations
19.
Takeuchi, Toshifumi, et al.. (1999). δ^15N and δ^13C measurements from the African elephant, Loxodonta africana, used for ivory sourcing. Kyushu University Institutional Repository (QIR) (Kyushu University). 5(5). 1–8. 4 indexed citations
20.
Koike, Hiroki, et al.. (1995). BIST Circuit Macro Using Microprogram ROM for LSI Memories. IEICE Transactions on Electronics. 78(7). 838–844. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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