1. 低次元量子スピン系の強磁場ESRによる研究
2. 低次元有機導体の磁気光学測定による研究
3. パルス強磁場測定装置の開発
4. 希薄磁性半導体のESRによる研究
5. Li２次電池材料のミリ波分光による研究

代表的な論文

1. "High Field Phase Transitions of Quasi One Dimensional S=1/2 Heisenberg Antiferromagnet Cu2(1,4-diazacycloheptane)2Cl4 Observed by Submillimeter Wave ESR," H. Ohta, T. Tanaka, S. Okubo, S. Kimura, H. Kikuchi and H. Nagasawa, J. Phys. Soc. Jpn. 68(3) (1999) 732-735.
2. "Observation of High Order Harmonic Resonances in Magneto-optical Measurements of (BEDT-TTF)2Br(DIA)," Y. Oshima, H. Ohta, K. Koyama, M. Motokawa, H. M. Yamamoto and R. Kato, J. Phys. Soc. Jpn. 71(4) (2002) 1031-1034.
3. "High Frequency ESR Measurements Using Pulsed Magnetic Fields in Kobe," H. Ohta, S. Okubo, T. Sakurai, T. Goto, K. Kirita, K. Ueda, Y. Uwatoko, T. Saito, M. Azuma, M. Takano and J. Akimitsu, Physica B 294-295 (2001) 624-629.
4. "ESR Study of GaAs:Er codoped with Oxygen Grown by Organometallic Vapor Phase Epitaxy," J. Yoshikawa, C. Urakawa, H. Ohta, T. Koide, T. Kawamoto, Y. Fujiwara and Y. Takeda, Physica E 10 (2001) 395-398.
5. "Millimeter Wave Reflection Measurement of Secondary Battery Substance LiNiO2," H. Ohta, A. Ueda, S. Ono, Y. Ikeuchi, T. Nanba, A. Hirano and R. Kanno, Jpn. J. Applied Phys. 39 (2000) Suppl. 39-1, 409-410.

講義

• 全学共通：教養原論/現代の物性科学、物理学C2
• 学部教育：現代物理学、電磁気学II・同演習
• 博士前期：物性論I、極限物性学
• 博士後期：物性論II
• 　その他：