研究成果

2022

• K. Sakuma, S. Rachi, G. Mizoguchi,T. Nakajima, A. Mizuno, and N. Sekiya, “A Superconducting Dual-Band Bandpass Filter for IF Signals of Multi-Frequency Millimeter-Wave Atmospheric Spectrometer ” IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, vol.33, 2500104, 2022.
• K. Sakuma, K. Ito, J. Murakami, A. Saito, and N. Sekiya, “Preparation of Trifluoroacetate Metal Organic Deposition Derived REBa₂Cu₃O_y Thin Film With High-Jc and Low-Rs for High-Power High-Temperature Superconducting Transmit Filters” IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, vol.33, 1500404, 2022.
• N. Oshimoto, K. Sakuma, O. Satoshi, and N. Sekiya, “High power transmission efficiency of wireless power transfer system using high-quality factor superconducting bulk coil” Applied Physics Express, vol.16, 23002, 2022.
• 作間 啓太, 池谷 光, 關谷 尚人, “三次元ワイヤレス電力伝送のための複数コイルの結合を用いた送電コイルの設計” IEICE Technical Report, 2022. 招待論文
• S. Rachi, K. Sakuma, T. Akahori, N. Sekiya, “Development of highly selective compact high-temperature superconducting quad-band bandpass filter using interdigital feeding structure for radio astronomy,” Superconductor Science and Technology, vol.36, 025006, 2022.
• M. Miura, G. Tsuchiya, T. Harada, K. Sakuma, H. Kurokawa, N. Sekiya, Y. Kato, R. Yoshida, T. Kato, K. Nakaoka, T. Izumi, F. Nabeshima, A. Maeda, T. Okada, S. Awaji, L. Civale, and B. Maiorov, “Thermodynamic approach for enhancing superconducting critical current performance,” NPG Asia Materials volume 14, Article number: 85, Oct. 2022. 2023年度応用物理学会超伝導分科会論文賞
• M. Okeda, K. Sakuma, N. Sekiya, “High efficiency wireless power transmission system that uses HTS transmitting and copper receiving coils with large difference in quality factor,” IEEE Trans. Appl. Supercond. vol. 32, 5400305, Jun. 2022.

2020

• M. Osada, B. Yang Wang, B.t H. Goodge, K. Lee, H. Yoon, K. Sakuma, D. Li, M. Miura, L. F. Kourkoutis, H.d Y. Hwang, “A Superconducting Praseodymium Nickelate with Infinite Layer Structure ” Nano Letters, vol. 20, 5735–5740, 2020.

2019

2018

• K. Sakuma, M. Sato, M. Miura, “Trifluoroacetate metal organic deposition derived (Y_0.77Gd_0.23)Ba₂Cu₃O_y films on CeO₂ buffered R-plane R-Al₂O₃ substrates ” Japanese Journal of Applied Physics vol. 57, 033102, 2018.

2016

• K. Sakuma, M. Ito, Y. He, T. Hajiri, K. Ueda, H. Asano “Ba_ySr_1-yTiO₃ buffer layers for strain tuning of infinite-layer Sr_1-xLa_xCuO₂ thin films” THIN SOLID FILMS. vol. 612, 8, 2016.
• K. Sakuma, M. Ito, T. Hajiri, K. Ueda, H. Asano “Controlled superconductivity in infinite-layer Sr_0.875La_0.125CuO₂ films sputter-deposited on Ba_ySr_1-yTiO₃ buffer layers ” APPLIED PHYSICS EXPRESS. vol. 9, 023101, 2016. Spotlights論文

2015

• Y. He, M. Ito, K. Sakuma, T. Hajiri, K. Ueda, H. Asano “Preparation and Properties of Sr_0.9La_0.1CuO₂ Thin Films Grown on BaySr1-yTiO3 Layers” IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY. vol. 25, 7501204, 2015.
• K. Sakuma, Y. He, K. Ueda, H. Asano “Deposition and reduction of infinite-layer Sr1-xLaxCuO2 films” JAPANESE JOURNAL OF APPLIED PHYSICS . vol. 54, 053101, 2015.

2014

• Y. Krockenberger, H. Irie, J. Yan, L. Waterston, B. Eleazer, K. Sakuma, H. Yamamoto “Superconductivity in cuprates with square-planar coordinated copper driven by hole carriers” APPLIED PHYSICS EXPRESS. vol. 7, 063101, 2014. Spotlights論文

2013

• K. Kobayashi, K. Ueda, N. Fukatani, H. Kawada, K. Sakuma, H. Asano “Epitaxial growth and physical properties of Heusler/perovskite heterostructures ”Journal of the Korean Physical Society . vol. 36, 620, 2013.
• H. Akatsuka, K. Sakuma, T. Miyawaki, K. Ueda, H. Asano “Growth and Properties of a-Axis Oriented Thin Films of Infinite-Layer Sr_1-xLa_xCuO₂ ” IEEE Trans. Appl. Supercond. vol. 23, 7501204, 2013.

2012

• Y. Krockenberger, K. Sakuma, H. Yamamoto “Molecular Beam Epitaxy and Transport Properties of Infinite-Layer Sr_0.9La_0.1CuO₂ Thin Films” APPLIED PHYSICS EXPRESS. vol. 5, 043101, 2012.
• K. Sanbou, K. Sakuma, T. Miyawaki, K. Ueda, H. Asano “Epitaxial thin films of ordered double perovskite SrLaVMoO_0.6 ” Materials Research Society Symposium Proceedings. vol. 1454, 21, 2012.

2010

• K. Sakuma, O. Michikami“Orientational control of CeO₂ buffer layers on A-plane sapphire substrates for REBa₂Cu₃O_7-σ thin films”Physica C. vol. 470, 1452, 2010.

1. M. Miura, G. Tsuchiya, T. Harada, K. Sakuma, H. Kurokawa, N. Sekiya, Y. Kato, R. Yoshida, T. Kato, K. Nakaoka, T. Izumi, F. Nabeshima, A. Maeda, T. Okada, S. Awaji, L. Civale, and B. Maiorov, “Thermodynamic approach for enhancing superconducting critical current performance,” NPG Asia Materials volume 14, Article number: 85, Oct. 2022. 2023年度応用物理学会超伝導分科会論文賞
2. 一般社団法人 電子情報通信学会 無線電力伝送研究会 特別賞 作間啓太、池谷光、關谷尚人.
3. 公益社団法人 低温工学・超電導学会 2021年度 奨励賞　作間啓太