Organization
Faculty of Engineering Science Associate Professor
Title
Associate Professor
External link
YAMAMOTO,Mahito
Degree
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Ph.D. (Physics) ( 2013.7 )
Research Interests
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Steep-slope transistors
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Phase change materials
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2D materials
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Nano Materials
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Surce Physics
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Correlated oxides
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van der Waals heterostructures
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Vanadium dioxide
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Hexagonal boron nitride
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Transition metal dichalcogenides
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Graphene
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Memory
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Sensors
Research Areas
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Natural Science / Semiconductors, optical properties of condensed matter and atomic physics
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Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment / Transistors, sensors, memory
Education
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University of Maryland Department of Physics
2008.8 - 2013.7
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Osaka University Graduate School of Engineering Department of Applied Physics
2006.4 - 2008.3
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Osaka University Department of Engineering Division of Applied Science
2002.4 - 2006.3
Research History
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Kansai University Faculty of Engineering Science Department of Pure and Applied Physics Associate Professor
2021.4
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Kansai University Faculty of Engineering Science Department of Pure and Applied Physics Assistant Professor
2020.4 - 2021.3
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Osaka Univeristy Institute of Industrial and Scientific Research Assistant Professor
2016.4 - 2020.3
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National Institute for Materials Science International Center for Materials Nanoarchitectonics Postdoctoral Fellow
2013.8 - 2016.3
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University of Maryland Department of Physics Research Assistantship
2008.8 - 2013.7
Professional Memberships
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Materials Research Society
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American Physical Society
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Japan Society of Aplied Physics
Papers
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Che-Yi Lin, Bo-Cia Chen, Yu-Chen Liu, Shang-Fu Kuo, Hsien-Chi Tsai, Yuan-Ming Chang, Chang-Yang Kuo, Chun-Fu Chang, Jyun-Hong Chen, Ying-Hao Chu, Mahito Yamamoto, Chang-Hong Shen, Yu-Lun Chueh, Po-Wen Chiu, Yi-Chun Chen, Jan-Chi Yang, Yen-Fu Lin
Nature Electronics 8 ( 7 ) 560 - 570 2025.6
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Signature of Dirac Fermion injection from hole-doped graphene into two-dimensional semiconductors Reviewed
Sei Hosomi, Shuta Honda, Mitsuru Inada, Shingo Sato, Hiroshi Tani, Takashi Taniguchi, Kenji Watanabe, Keiji Ueno, Mahito Yamamoto
Science and Technology Reports of Kasai University 67 13 - 18 2025.3
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Koyo Nakayama, Shota Toida, Takahiko Endo, Mitsuru Inada, Shingo Sato, Hiroshi Tani, Kenji Watanabe, Takashi Taniguchi, Keiji Ueno, Yasumitsu Miyata, Kazunari Matsuda, Mahito Yamamoto
Applied Physics Letters 125 ( 22 ) 2024.11
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Meng-Yu Tsai, Chia-Tse Huang, Che-Yi Lin, Mu-Pai Lee, Feng-Shou Yang, Mengjiao Li, Yuan-Ming Chang, Kenji Watanabe, Takashi Taniguchi, Ching-Hwa Ho, Wen-Wei Wu, Mahito Yamamoto, Jiunn-Lin Wu, Po-Wen Chiu, Yen-Fu Lin
Nature Electronics 6 ( 10 ) 755 - 764 2023.9
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Diffused Beam Energy to Dope van der Waals Electronics and Boost Their Contact Barrier Lowering
Che-Yi Lin, Mu-Pai Lee, Yuan-Ming Chang, Yi-Tang Tseng, Feng-Shou Yang, Mengjiao Li, Jiann-Yeu Chen, Ciao-Fen Chen, Meng-Yu Tsai, Yi-Chun Lin, Keiji Ueno, Mahito Yamamoto, Shun-Tsung Lo, Chen-Hsin Lien, Po-Wen Chiu, Kazuhito Tsukagoshi, Wen-Wei Wu, Yen-Fu Lin
ACS Applied Materials & Interfaces 14 ( 36 ) 41156 - 41164 2022.8
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Shingo Genchi, Mahito Yamamoto, Takuya Iwasaki, Shu Nakaharai, Kenji Watanabe, Takashi Taniguchi, Yutaka Wakayama, Hidekazu Tanaka
Applied Physics Letters 120 ( 5 ) 2022.1
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Electrostatic potential measurement at the Pt/TiO2 interface using electron holography
Hiroshi Nakajima, Toshiaki Tanigaki, Takaaki Toriyama, Mahito Yamamoto, Hidekazu Tanaka, Yasukazu Murakami
Journal of Applied Physics 129 ( 17 ) 174304 - 174304 2021.5
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Barrier Formation at the van der Waals Contacts of Vanadium Dioxide and Transition Metal Dichalcogenides Reviewed
Mahito Yamamoto, Ryo Nouchi, Teruo Kanki, Shu Nakaharai, Azusa Hattori, Kenji Watanabe, Takashi Taniguchi, Yutaka Wakayama, Keiji Ueno, Hidekazu Tanaka
ACS Applied Materials & Intefaces 11 36871 - 36879 2019.9
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Broad range thickness identification of hexagonal boron nitride by colors Reviewed
Yuto Anzai, Mahito Yamamoto, Shingo Genchi, Kenji Watanabe, Takashi Taniguchi, Shuhei Ichikawa, Yasufumi Fujiwara, Hidekazu Tanaka
Applied Physics Express 12 ( 5 ) 055007 2019.5
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Growth of vanadium dioxide thin films on hexagonal boron nitride flakes as transferrable substrates Reviewed
Shingo Genchi, Mahito Yamamoto, Koji Shigematsu, Shodai Aritomi, Ryo Nouchi, Teruo Kanki, Kenji Watanabe, Takashi Taniguchi, Yasukazu Murakami, Hidekazu Tanaka
Scientific Reports 9 ( 1 ) 3857 2019.2
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Gate-Tunable Thermal Metal-Insulator Transition in VO2 Monolithically Integrated into a WSe2 Field-Effect Transistor Reviewed
Mahito Yamamoto, Ryo Nouchi, Teruo Kanki, Azusa N Hattori, Kenji Watanabe, Takashi Taniguchi, Keiji Ueno, Hidekazu Tanaka
ACS applied materials & interfaces 11 ( 3 ) 3224 - 3230 2019.1
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Correlation between Ni Valence and Resistance Modulation on a SmNiO3 Chemical Transistor Reviewed
Daiki Kawamoto, Azusa N Hattori, Mahito Yamamoto, Xin Liang Tan, Ken Hattori, Hiroshi Daimon, Hidekazu Tanaka
ACS Applied Electronic Materials 1 ( 1 ) 82 - 87 2018.12
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Layer-by-Layer Oxidation Induced Electronic Properties in Transition-Metal Dichalcogenides Reviewed
Das Soumya Ranjan, Wakabayashi Katsunori, Yamamoto Mahito, Tsukagoshi Kazuhito, Dutta Sudipta
JOURNAL OF PHYSICAL CHEMISTRY C 122 ( 29 ) 17001 - 17007 2018.7
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Pronounced photogating effect in atomically thin WSe2 with a self-limiting surface oxide layer Reviewed
Mahito Yamamoto, Keiji Ueno, Kazuhito Tsukagoshi
Applied Physics Letters 112 ( 18 ) 2018.4
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Virtual substrate method for nanomaterials characterization Reviewed
Bo Da, Jiangwei Liu, Mahito Yamamoto, Yoshihiro Ueda, Kazuyuki Watanabe, Nguyen Thanh Cuong, Songlin Li, Kazuhito Tsukagoshi, Hideki Yoshikawa, Hideo Iwai, Shigeo Tanuma, Hongxuan Guo, Zhaoshun Gao, Xia Sun, Zejun Ding
NATURE COMMUNICATIONS 8 2017.5
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Measuring the Complex Optical Conductivity of Graphene by Fabry-Perot Reflectance Spectroscopy Reviewed
Behnood G. Ghamsari, Jacob Tosado, Mahito Yamamoto, Michael S. Fuhrer, Steven M. Anlage
SCIENTIFIC REPORTS 6 2016.9
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Carrier Polarity Control in alpha-MoTe2 Schottky Junctions Based on Weak Fermi-Level Pinning Reviewed
Shu Nakaharai, Mahito Yamamoto, Keiji Ueno, Kazuhito Tsukagoshi
ACS APPLIED MATERIALS & INTERFACES 8 ( 23 ) 14732 - 14739 2016.6
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Self-Limiting Oxides on WSe2 as Controlled Surface Acceptors and Low-Resistance Hole Contacts Reviewed
Mahito Yamamoto, Shu Nakaharai, Keiji Ueno, Kazuhito Tsukagoshi
NANO LETTERS 16 ( 4 ) 2720 - 2727 2016.4
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Origin of Noise in Layered MoTe2 Transistors and its Possible Use for Environmental Sensors Reviewed
Yen-Fu Lin, Yong Xu, Che-Yi Lin, Yuen-Wuu Suen, Mahito Yamamoto, Shu Nakaharai, Keiji Ueno, Kazuhito Tsukagoshi
ADVANCED MATERIALS 27 ( 42 ) 6612 - + 2015.11
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Electrostatically Reversible Polarity of Ambipolar alpha-MoTe2 Transistors Reviewed
Shu Nakaharai, Mahito Yamamoto, Keiji Ueno, Yen-Fu Lin, Song-Lin Li, Kazuhito Tsukagoshi
ACS NANO 9 ( 6 ) 5976 - 5983 2015.6
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Double resonance Raman modes in monolayer and few-layer MoTe2 Reviewed
Huaihong Guo, Teng Yang, Mahito Yamamoto, Lin Zhou, Ryo Ishikawa, Keiji Ueno, Kazuhito Tsukagoshi, Zhidong Zhang, Mildred S. Dresselhaus, Riichiro Saito
PHYSICAL REVIEW B 91 ( 20 ) 2015.5
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Self-Limiting Layer-by-Layer Oxidation of Atomically Thin WSe2 Reviewed
Mahito Yamamoto, Sudipta Dutta, Shinya Aikawa, Shu Nakaharai, Katsunori Wakabayashi, Michael S. Fuhrer, Keiji Ueno, Kazuhito Tsukagoshi
NANO LETTERS 15 ( 3 ) 2067 - 2073 2015.3
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Thickness Scaling Effect on Interfacial Barrier and Electrical Contact to Two-Dimensional MoS2 Layers Reviewed
Song-Lin Li, Katsuyoshi Komatsu, Shu Nakaharai, Yen-Fu Lin, Mahito Yamamoto, Xiangfeng Duan, Kazuhito Tsukagoshi
ACS NANO 8 ( 12 ) 12836 - 12842 2014.12
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Spin injection and detection in a graphene lateral spin valve using an yttrium-oxide tunneling barrier Reviewed
Katsuyoshi Komatsu, Shinya Kasai, Song-Lin Li, Shu Nakaharai, Nobuhiko Mitoma, Mahito Yamamoto, Kazuhito Tsukagoshi
APPLIED PHYSICS EXPRESS 7 ( 8 ) 2014.8
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Ambipolar MoTe2 Transistors and Their Applications in Logic Circuits Reviewed
Yen-Fu Lin, Yong Xu, Sheng-Tsung Wang, Song-Lin Li, Mahito Yamamoto, Alex Aparecido-Ferreira, Wenwu Li, Huabin Sun, Shu Nakaharai, Wen-Bin Jian, Keiji Ueno, Kazuhito Tsukagoshi
ADVANCED MATERIALS 26 ( 20 ) 3263 - + 2014.5
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Strong Enhancement of Raman Scattering from a Bulk-Inactive Vibrational Mode in Few-Layer MoTe2 Reviewed
Mahito Yamamoto, Sheng Tsung Wang, Meiyan Ni, Yen-Fu Lin, Song-Lin Li, Shinya Aikawa, Wen-Bin Jian, Keiji Ueno, Katsunori Wakabayashi, Kazuhito Tsukagoshi
ACS NANO 8 ( 4 ) 3895 - 3903 2014.4
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Anisotropic Etching of Atomically Thin MoS2 Reviewed
Mahito Yamamoto, Theodore L. Einstein, Michael S. Fuhrer, William G. Cullen
JOURNAL OF PHYSICAL CHEMISTRY C 117 ( 48 ) 25643 - 25649 2013.12
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"The Princess and the Pea" at the Nanoscale: Wrinkling and Delamination of Graphene on Nanoparticles Reviewed
Mahito Yamamoto, Olivier Pierre-Louis, Jia Huang, Michael S. Fuhrer, Theodore L. Einstein, William G. Cullen
PHYSICAL REVIEW X 2 ( 4 ) 2012.12
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Charge Inhomogeneity Determines Oxidative Reactivity of Graphene on Substrates Reviewed
Mahito Yamamoto, Theodore L. Einstein, Michael S. Fuhrer, William G. Cullen
ACS NANO 6 ( 9 ) 8335 - 8341 2012.9
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Modeling noncontact atomic force microscopy resolution on corrugated surfaces Reviewed
Kristen M. Burson, Mahito Yamamoto, William G. Cullen
BEILSTEIN JOURNAL OF NANOTECHNOLOGY 3 230 - 237 2012.3
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HIGH RESOLUTION MICROSCOPY OF SIO2 AND THE STRUCTURE OF SIO2-SUPPORTED GRAPHENE Reviewed
Kristen M. Burson, Mahito Yamamoto, William G. Cullen
PROCEEDINGS OF THE ASME INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, VOL 7 551 - 555 2012
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High-Fidelity Conformation of Graphene to SiO2 Topographic Features Reviewed
W. G. Cullen, M. Yamamoto, K. M. Burson, J. H. Chen, C. Jang, L. Li, M. S. Fuhrer, E. D. Williams
PHYSICAL REVIEW LETTERS 105 ( 21 ) 215504 2010.11
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Anomalous decay of multilayer holes on SrTiO3(001) Reviewed
Mahito Yamamoto, Koichi Sudoh, Hiroshi Iwasaki, Ellen D. Williams
PHYSICAL REVIEW B 82 ( 11 ) 2010.9
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Decay of multilayer holes on SrTiO3(001) Reviewed
M. Yamamoto, K. Sudoh, H. Iwasaki
SURFACE SCIENCE 601 ( 5 ) 1255 - 1258 2007.3
Books
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半導体・磁性体・電池の固/固界面制御と接合・積層技術
山本 真人（ Role： Contributor第3節 2次元半導体応用のための界面・表面制御）
S&T出版 2024.6
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System-Materials Nanoarchitectonics
Mahito Yamamoto, Kazuhito Tsukagoshi（ Role： ContributorGrowth and Electronic and Optoelectronic Applications of Surface Oxides on Atomically Thin WSe2）
Springer Nature 2022
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酸化物・原子層物質ハイブリッドによる新奇デバイスの創製
山本 真人, 田中 秀和
金属 2018.2
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Frontier of Layered Chalcogenide Materials Research
Mahito Yamamoto（ Role： ContributorChapter 8 Raman Spectroscopy of Transition Metal Dichalcogenides）
CMC Publishing Co.,Ltd 2016.7
Presentations
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Transfer characteristics of transition metal dichalcogenide transistors with VO2 contacts
YAMAMOTO,Mahito, NOUCHI, RYO, KANKI, Teruo, NAKAHARAI, Shu, HATTORI, Azusa, WATANABE, Kenji, TANIGUCHI, Takashi, WAKAYAMA, Yutaka, UENO, Keiji, TANAKA, Hidekazu
Recent Progress on Graphene and 2D Materials Research 2019 2019.10
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Phase transition FETs based on two-dimensional WSe2 with VO2 contacts
YAMAMOTO,Mahito, NOUCHI, Ryo, KANKI, Teruo, NAKAHARAI, Shu, HATTORI, Azusa, WATANABE, Kenji, TANIGUCHI, Takashi, WAKAYAMA, Yutaka, UENO, Keiji, TANAKA, Hidekazu
26th INTERNATIONAL WORKSHOP ON OXIDE ELECTRONICS 2019.10
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Carrier injection from VO2 into MoS2 and WSe2
YAMAMOTO,Mahito, NOUCHI, Ryo, KANKI, Teruo, HATTORI, Azusa, WATANABE, Kenji, TANIGUCHI, Takashi, UENO, Keiji, TANAKA, Hidekazau
2019 Annual Meeting of the Physical Society of Taiwan 2019.1
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Steep-slope transistors based on 2D semiconductors contacted with the phase-change material VO2
YAMAMOTO,Mahito, KANKI, Teruo, HATTORI, Azusa, NOUCHI, Ryo, WATANEBE, Kenji, TANIGUCHI, Takashi, UENO, Keiji, TANAKA, Hidekazau
2018 MRS Spring Meeting and Exhibit 2018.4
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Non-thermionic switching in an atomically thin WSe2 transistor with the phase-change material VO2 contact
YAMAMOTO,Mahito, KANKI, Teruo, HATTORI, Azusa, NOUCHI, Ryo, WATANABE, Kenji, TANIGUCHI, Takashi, UENO, Keiji, TANAKA, Hidekazau
APS March Meeting 2018.3
Awards
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39th Japan Society of Applied Physics Young Scientist Presentation Award
2016.3 Japan Society of Applied Physics Thickness-controlled oxidation of atomically thin WSe2
Mahito Yamamoto
Research Projects
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Two-dimensional semiconductor FET with a strongly correlated gate
Grant number：24H01206 2024.4 - 2026.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Transformative Research Areas (A)
Grant amount：\7020000 （ Direct Cost: \5400000 、 Indirect Cost：\1620000 ）
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van der Waals heterostructure devices based on two-dimensional correlated oxides
Grant number：22H05472 2022.6 - 2024.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Transformative Research Areas (A)
Grant amount：\6760000 （ Direct Cost: \5200000 、 Indirect Cost：\1560000 ）
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Monolithic phase change oscillator network based on two-dimensional materials
Grant number：22K18816 2022.6 - 2024.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)
Grant amount：\6370000 （ Direct Cost: \4900000 、 Indirect Cost：\1470000 ）
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Synthesis of Ultrathin Functional Oxides Using Atomically Thin Transition Metal Dichalcogenides as Oxidation Precursors
Grant number：23K23182 2022.4 - 2026.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
Grant amount：\17290000 （ Direct Cost: \13300000 、 Indirect Cost：\3990000 ）
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神経模倣コンピュータ応用に向けた超低消費電力二次元材料不揮発性メモリの創出
2022 - 2024
科学技術振興機構 国際的な科学技術共同研究などの推進 国際科学技術協力基盤整備事業 台湾
山本 真人
Authorship：Principal investigator
本研究は、将来的な神経模倣コンピュータへの応用展開を視野に入れ、二次元材料を基盤とする超低消費電力不揮発性メモリの創出を目指すものである。日本側チームは欠陥制御された二次元材料を用いた電荷トラップメモリ、および超低消費電力性を有するトンネル電界効果トランジスタ(FET)の開発を主に行う。一方、台湾側チームは化学制御された二次元材料トラップを用いたメモリの開発とトンネルFETの低消費電力動作実証を行う。各チームの研究によって得られた知見や技術を共有・統合することで、神経模倣コンピュータ実装に資する超低消費電力電荷トラップメモリの効果的開発とそのシナプスデバイス集積化を推進する。両チームによる共同研究を通して、二次元材料メモリに基づく神経模倣コンピュータの将来的な実用展開が期待される。
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Boosting the performance of monolithic phase change transistors and their logic applications
2019.4 - 2021.3
Japan Society for the Promotion of Science Grant-in-Aid for Scientific Research
Mahito Yamamoto
Authorship：Principal investigator Grant type：Competitive
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Correlated oxides/atomically thin semiconductors heterostructures for steep-slope transistors applications
2017.4 - 2019.3
Japan Society for the Promotion of Science Grant-in-Aid for Scientific Research
Mahito Yamamoto
Authorship：Principal investigator Grant type：Competitive
Social Activities
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応用物理学会トータルバイオミメティクス研究グループ庶務幹事
2020
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Nature Publishing Group Scientific Reports, Editorial Board Member
2019
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The 16th International Symposium on Sputtering & Plasma Process 実行委員
2019