I. Journal Publications

PUBLICATIONS

II. Invited conference presentations
  1. Le Duc Anh, Pham Nam Hai, Yuichi Kasahara, Yoshihiro Iwasa, Masaaki Tanaka, “Electrical modulation of ferromagnetism via controlling the wavefunctions in n-type ferromagnetic semiconductor (In,Fe)As quantum wells”, The 37th best young scientist presentation award ceremony lecture, Japan Society of Applied Physics Annual Spring Meeting, 14a-D2-2;Tokai university, 14 Mar 2015.

  2. Le Duc Anh, Pham Nam Hai, Yuichi Kasahara, Yoshihiro Iwasa, Masaaki Tanaka,“Control of magnetic properties by manipulating the carrier wavefunction in n-type ferromagnetic semiconductor (In,Fe)As quantum wells”, The Vietnamese – Japanese Student’s Scientific Exchange Meeting 2015, Kyoto, Japan 31 Oct 2015.

  3. Le Duc Anh, Pham Nam Hai, Yuichi Kasahara, Yoshihiro Iwasa, Masaaki Tanaka, “N-type carrier-induced ferromagnetic semiconductor and electrical control of ferromagnetism by wavefunction engineering”, 61st Annual Conference on Magnetism and Magnetic Materials (MMM2016), New Orleans, Louisiana, USA, Oct 31st – Nov 4th 2016.

  4. Le Duc Anh, Pham Nam Hai, Masaaki Tanaka, “Fe-based narrow-gap ferromagnetic semiconductors: New materials for high-performance spintronic devices”, The Collaborative Conference on Materials Research 2017 (CCMR2017), Jeju, Korea, 29 Jun 2017.

  5. レ デゥック アイン (招待、基調講演)“狭ギャップ強磁性半導体とヘテロ構造の作製と機能物性” 第1回 スピントロニクス学術連携研究教育センター(CSRN)主催 ワークショップ:新しいスピントロニクス機能材料の開発とその物性制御、東京大学,2017年10月28-29日。

  6. Le Duc Anh, Nguyen Thanh Tu, Pham Nam Hai, Masaaki Tanaka, “Fe-based n-type and p-type narrow-gap III-V ferromagnetic semiconductors with high Curie temperatures”, SPIE Spintronics XI, San Diego, USA, 20 Aug 2018.

  7. Le Duc Anh, Nguyen Thanh Tu, Pham Nam Hai, Masaaki Tanaka, “High Curie temperature and Electrical Control of Magnetic Properties in Fe-based Narrow-gap III-V Ferromagnetic Semiconductor Heterostructures”, 2019 Joint MMM-Intermag Conference, Washington DC, USA, 14-18 Jan 2019.

  8. Le Duc Anh, Nguyen Thanh Tu, 瀧口耕介, Pham Nam Hai, 田中雅明, “N-type and p-type ferromagnetic semiconductors: High Curie temperature and heterostructure devices”, 2019 年応用物理学会秋季学術講演会「新しいスピントロニクス材料と物性」シンポジウム、北海道大学、2019年9月18-21日.

  9. Le Duc Anh, Nguyen Thanh Tu, Pham Nam Hai, Masaaki Tanaka,“Fe-based narrow-gap ferromagnetic semiconductors: new approach to spin-based electronics”, The Vietnamese – Japanese Science and Technology Symposium 2019 (VJST2019), Hanoi, Vietnam 4 May 2019.

  10. Le Duc Anh, “Efficient bias-driven magnetization control by orbital selection at a La0.67Sr0.33MnO3 interface”, APS March Meeting 2020, Denver, USA, 5 March 2020.

  11. Le Duc Anh, “n型およびp型Fe系強磁性半導体 -高いキュリー温度の実現とヘテロ構造デバイスへの展開-″第76回スピントロニクス専門研究会「イマドキの磁性材料開発と理論設計」(オンライン)、2020年9月25日。

  12. Le Duc Anh, S. Kaneta-Takada, M. Tokunaga, M. Seki, H. Tabata, M. Tanaka, S. Ohya, “New functionalities at oxide interfaces: Ultralow-power magnetization switching by orbital selection and high-mobility two-dimensional hole/electron transport”, APS March Meeting 2021 (Online), 16 March 2021.

  13. Le Duc Anh, Shingo Kaneta-Takada, Theodorus J. Wijaya, Masashi Tokunaga, Munetoshi Seki, Hitoshi Tabata, Masaaki Tanaka, Shinobu Ohya, “Emergent phenomena at oxide interfaces and their applications towards oxide-based electronics”, International Workshop on Oxide Electronics (iWOE 27), Genoa, Italy, 10-13 Oct 2021.

  14. Le Duc Anh, N-type and P-type ferromagnetic semiconductors: A viable platform for topological quantum computing、応用物理学会 KOSEN SC & 九州大学SC & 宇都宮大学SC共同開催VR学術講演会、2021年11月12日。

III. Patent Applications 

1. レデゥックアイン、金田真悟、大矢忍、田中雅明、関宗俊、田畑仁

整理番号:             190270001

出願番号:          特願2019-205568

提出日:              令和1年(2019年)11月13日

発明の名称:      半導体デバイスおよびその製造方法

2. レデゥックアイン、金田真悟、大矢忍、田中雅明、関宗俊、田畑仁

整理番号:          19-0270-001 WO01

出願番号:          PCT/JP2020/042516

出願国:              世界知的所有権機関(WIPO)

出願日:              2020年11月13日

発明の名称:      半導体デバイスおよびその製造方法

  1. Kosuke Takiguchi, Kyosuke Okamura, Le Duc Anh, and Masaaki Tanaka, "Gate-controlled proximity magnetoresistance in In1−xGaxAs/(Ga,Fe)Sb bilayer heterostructures", Phys. Rev. B 105, 235202 (2022).

  2. Takahito Takeda, Shoya Sakamoto, Le Duc Anh, Yukiharu Takeda, Shin-ichi Fujimori, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Atsushi Fujimori, Masaaki Tanaka, and Masaki Kobayashi, "Development of magnetism in Fe-doped magnetic semiconductors: Resonant photoemission and x-ray magnetic circular dichroism studies of (Ga,Fe)As", Phys. Rev. B 105, 195155 (2022). 

  3. N. T. Tu, T. Otsuka, Y. Arakawa, L. D. Anh, M. Tanaka, P. N. Hai, Spin transport in fully ferromagnetic p–n junctions. Journal of Applied Physics 131, 013902 (2022). 

  4. S. Arai, S. Kaneta-Takada, L. D. Anh, M. Tanaka, S. Ohya, “Theoretical analysis of the inverse Edelstein effect at the LaAlO3 / SrTiO3 interface with an effective tight-binding model: Important role of the second dxy subband” Appl. Phys. Express 15, 013005 (2022). (Open Access)

  5. Tomoki Hotta, Kengo Takase, Kosuke Takiguchi, Karumuri Sriharsha, Le Duc Anh and Masaaki Tanaka, “Growth and characterization of quaternary-alloy ferromagnetic semiconductor (In,Ga,Fe)Sb”, AIP Advances 12, 015307 (2022). (Open Access)

  6. Ryota Suzuki, Yuriko Tadano, Le Duc Anh, Masaaki Tanaka, and Shinobu Ohya, “Unconventional bias dependence of tunnel magnetoresistance induced by the Coulomb blockade effect”, AIP Advances 11, 125029 (2021)

  7. Miao Jiang, Eisuke Matsushita, Yota Takamura, Le Duc Anh, Shigeki Nakagawa, Shinobu Ohya, and Masaaki Tanaka, Spin-orbit torque magnetization switching in perpendicularly magnetized full Heusler alloy Co2FeSi, AIP Advances 11, 115014 (2021)

  8. Le Duc Anh, Kengo Takase, Takahiro Chiba, Yohei Kota, Kosuke Takiguchi, Masaaki Tanaka, “Elemental topological Dirac semimetal α-Sn with high quantum mobility”, Advanced Materials 33, 2104645 (2021). DOI: 10.1002/adma.202104645. 👉Press release (Japanese): 世界最高品質の単元素トポロジカル・ディラック半金属を実現

  9. Le Duc Anh, Taiki Hayakawa, Yuji Nakagawa, Hikari Shinya, Tetsuya Fukushima, Hiroshi Katayama-Yoshida, Yoshihiro Iwasa, and Masaaki Tanaka, “Ferromagnetism and giant magnetoresistance in zinc-blende FeAs monolayers embedded in semiconductor structures”, Nature Communications 12, 4201 (2021). 👉Press release (Japanese): 磁性元素を配列した強磁性超格子構造の作製と巨大磁気抵抗の実現~究極の原子層結晶成長法を駆使したスピントロニクス機能の実現へ新たな道~

  10. Karumuri Sriharsha, Le Duc Anh, Masaaki Tanaka, "Ferromagnetic Fe-doped InAs quantum dots with high Curie temperature", Appl. Phys. Express 14, pp.083002/1-4 (2021). 

  11. Masaki Kobayashi, Le Duc Anh, Masahiro Suzuki, Yukiharu Takeda, Shin-ichi, Fujimori, Masaaki Tanaka, Shinobu Ohya, and Atsushi Fujimori, “Alternation of Magnetic Anisotropy Accompanied by Metal-Insulator Transition in Strained Ultrathin Manganite Heterostructures”, Phys. Rev. Applied 15, 064019 (2021).

  12. M. Kobayashi, Le Duc Anh, J. Minár, W. Khan, S. Borek, P. N. Hai, Y. Harada, T. Schmitt, M. Oshima, A. Fujimori, M. Tanaka, and V. N. Strocov, Minority-Spin Impurity Band in n-Type (In,Fe)As: A Materials Perspective for Ferromagnetic Semiconductors, Phys. Rev. B 103, 115111 (2021).

  13. Takahito Takeda, Shoya Sakamoto, Kohsei Araki, Yuita Fujisawa, Le Duc Anh, Nguyen Thanh Tu, Yukiharu Takeda, Shin-ichi Fijimori, Atsushi Fujimori, Masaaki Tanaka, and Masaki Kobayashi, “Evolution of the Fe-3d impurity band state as the origin of high Curie temperature in p-type ferromagnetic semiconductor (Ga,Fe)Sb”, Phys. Rev. B. 102, pp.1-8, 245203 (2020).

  14. Ye Du, Shoma Arai, Shingo Kaneta-Takada, Le Duc Anh, Shutaro Karube, Makoto Kohda, Shinobu Ohya, Junsaku Nitta, "Room-temperature perpendicular magnetic anisotropy of Pt/Co/AlOx trilayers on SrTiO3 (001)". AIP Advances 10, 105010 (2020).

  15. Karumuri Sriharsha, Le Duc Anh, Yuji Shimada, Takuji Takahashi, and Masaaki Tanaka, “Growth and characterization of ferromagnetic Fe-doped GaSb quantum dots with high Curie temperature, APL Materials 8, pp.091107/1-7 (2020).

  16. Kengo Takase, Le Duc Anh, Kosuke Takiguchi, and Masaaki Tanaka, Current-in-plane spin-valve magnetoresistance in ferromagnetic semiconductor (Ga,Fe)Sb heterostructures with high Curie temperature, Appl. Phys. Lett. 117, pp.092402/1-5 (2020).

  17. Shingo Kaneta-Takada, Michihiro Yamada, Shoichi Sato, Shoma Arai, Le Duc Anh, Kohei Hamaya and Shinobu Ohya, "Enhancement of the spin Hall angle by interdiffusion of atoms in Co2FeAl0.5Si0.5/n-Ge heterostructures", Phys. Rev. Applied 14, 024096 (2020).

  18. Le Duc Anh, Taiki Hayakawa, Kohei Okamoto, Nguyen Thanh Tu, Masaaki Tanaka, "Transport and magnetic properties of co-doped ferromagnetic semiconductor (In,Fe,Mn)As", Appl. Phys. Express 13, 083005 (2020).

  19. T. Takeda, M. Suzuki, Le Duc Anh , N. T. Tu, T. Schmitt, S. Yoshida, M. Sakano, K. Ishizaka, Y. Takeda, S. Fujimori, M. Seki, H. Tabata, A. Fujimori, V. N. Strocov, M. Tanaka, and M. Kobayashi, "Hybridization between the ligand p band and Fe-3d orbitals in the p-type ferromagnetic semiconductor (Ga,Fe)Sb", Phys. Rev. B 101, 155142(2020).

  20. Le Duc Anh, Shingo Kaneta, Masashi Tokunaga, Munetoshi Seki, Hitoshi Tabata, Masaaki Tanaka, Shinobu Ohya, "High‐Mobility 2D Hole Gas at a SrTiO3 Interface". Adv. Mater. 32, 1906003 (2020). 👉Press release (Japanese): 高い移動度をもつ二次元正孔伝導を酸化物で初めて実現 ~高機能酸化物エレクトロニクスの実現へ新たな道を開拓~

  21. S. Goel, L. D. Anh, S. Ohya, and M. Tanaka, "Temperature dependence of magnetic anisotropy in heavily Fe-doped ferromagnetic semiconductor (Ga,Fe)Sb", J. Appl. Phys. 127, 023904 (2020)

  22. Vu T. H. Huong,Dao T. T. Nguyet, Nguyen P. Duong, To T. Loan, S. Soontaranon, L. D. Anh, "Magnetic interactions and spin-wave stiffness constant of In-substituted yttrium iron garnets." Journal of Science: Advanced Materials and Devices (2020).

  23. S. Ohya, D. Araki, L. D. Anh, S. Kaneta, M. Seki, H. Tabata, and M. Tanaka, "Efficient intrinsic spin-to-charge current conversion in an all-epitaxial single-crystal perovskite-oxide heterostructure of La0.67Sr0.33MnO3/LaAlO3/SrTiO3", Phys. Rev. Res. 2, 012014 (R) (2020).

  24. S. Sakamoto, Y. Nonaka, K. Ikeda, Zh. Chi, Y. Wan, M. Suzuki, A. Fujimori, L. D. Anh, P. N. Hai, Y. Takeda, Y. Saitoh, M. Kobayashi, M. Tanaka, Y. K. Wakabayashi, and H. Yamagami, "Magnetization process of the insulating ferromagnetic semiconductor (Al,Fe)Sb", Phys. Rev. B 101, 075204 (2020).

  25. Le Duc Anh, Takashi Yamashita, Hiroki Yamasaki, Daisei Araki, Munetoshi Seki, Hitoshi Tabata, Masaaki Tanaka, and Shinobu Ohya, "Ultralow-Power Orbital-Controlled Magnetization Switching Using a Ferromagnetic Oxide Interface". Phys. Rev. Applied. 12, 041001 (2019). 👉Press release (Japanese): 磁化方向制御に必要な電力を極限まで低減可能な新たな方法を実証

  26. Kosuke Takiguchi*, Le Duc Anh*, Takahiro Chiba, Tomohiro Koyama, Daichi Chiba, Masaaki Tanaka, Giant gate-controlled proximity magnetoresistance in semiconductor-based ferromagnetic–non-magnetic bilayers. Nature Physics 15, 1134 (2019) . (*: equal contribution). 👉Press release (Japanese): 非磁性半導体/強磁性半導体ヘテロ接合における新しい電子伝導現象を発見

  27. Nguyen Thanh Tu, Pham Nam Hai, Le Duc Anh, Masaaki Tanaka, Heavily Fe-doped ferromagnetic semiconductor (In,Fe)Sb with high Curie temperature and large magnetic anisotropy, Appl. Phys. Express 12(10), 103004 (2019).

  28. Shobhit Goel, Le Duc Anh, Nguyen Thanh Tu, Shinobu Ohya, and Masaaki Tanaka,In-plane to perpendicular magnetic anisotropy switching in heavily-Fe-doped ferromagnetic semiconductor (Ga,Fe)Sb with high Curie temperature. Phys. Rev. Materials 3, 084417 (2019).

  29. Shoya Sakamoto, Nguyen Thanh Tu, Yukiharu Takeda, Shin-ichi Fujimori, Pham Nam Hai, Le Duc Anh, Yuki K. Wakabayashi, Goro Shibata, Masafumi Horio, Keisuke Ikeda, Yuji Saitoh, Hiroshi Yamagami, Masaaki Tanaka, and Atsushi Fujimori. Electronic structure of the high-TC ferromagnetic semiconductor (Ga,Fe)Sb: X-ray magnetic circular dichroism and resonance photoemission spectroscopy studies. Phys. Rev. B 100, 035204 (2019).

  30. Shingo Kaneta, Le Duc Anh, Karumuri Sriharsha, and Masaaki Tanaka Observation of quantum size effect at the conduction band bottom of n-type ferromagnetic semiconductor (In,Fe)As thin films Appl. Phys. Express 12 pp. 073001/1-4 (2019).

  31. T. Nakamura, L. D. Anh, Y. Hashimoto, Y. Iwasaki, S. Ohya, M. Tanaka and S. Katsumoto, Evidence for Spin-Triplet Electron Pairing in the Proximity-Induced Superconducting State of an Fe-Doped InAs Semiconductor. Phys. Rev. Lett. 122, 107001 (2019).👉Press release (Japanese):磁性半導体中にスピン三重項の超伝導電流を流すことに成功

  32. K. Sriharsha, L. D. Anh*, N. T. Tu, S. Goel, and M. Tanaka*, Magneto-optical spectra and the presence of an impurity band in p-type ferromagnetic semiconductor (Ga,Fe)Sb with high Curie temperature APL Materials 7, 021105 (2019).

  33. S. Goel, L. D. Anh*, S. Ohya, and M. Tanaka*, “Ferromagnetic resonance and control of magnetic anisotropy by epitaxial strain in the ferromagnetic semiconductor (Ga0.8,Fe0.2)Sb at room temperature.” Phys. Rev. B 99, 014431 (2019).

  34. L. D. Anh, P. N. Hai, M. Tanaka, Electrical tuning of the band alignment and magnetoconductance in an n-type ferromagnetic semiconductor (In,Fe)As-based spin-Esaki diode. Appl. Phys. Lett. 112, 102402 (2018). *Selected as Featured Article in Applied Physics Letters. 👉AIP Scilight: A change in sign brings a sign of change for spin-current devices 

  35. T. Nakamura, L. D. Anh, Y. Hashimoto, Y. Iwasaki, S. Ohya, M. Tanaka and S. Katsumoto, Proximity-Induced Superconductivity in a Ferromagnetic Semiconductor (In,Fe)As. Journal of Physics: Conference Series 969 (1), 012036 (2018).

  36. N. T. Tu, P. N. Hai, L. D. Anh, M. Tanaka, High-temperature ferromagnetism in new n-type Fe-doped ferromagnetic semiconductor (In,Fe)Sb.” APEX 11 (6), 063005 (2018)

  37. N. T. Tu, P. N. Hai, L. D. Anh, M. Tanaka, Electrical control of ferromagnetism in the n-type ferromagnetic semiconductor (In,Fe)Sb with high Curie temperature.Appl. Phys. Lett.112, 122409 (2018).

  38. L. D. Anh, N. Okamoto, M. Seki, T. Matou, K. Takeshima, M. Seki, H. Tabata, M. Tanaka, S. Ohya, “Hidden peculiar magnetic anisotropy at the interface in a ferromagnetic perovskite-oxide heterostructure.” Scientific Reports 7, 8715 (2017).

  39. T. Matou, K. Takeshima, L. D. Anh, M. Seki, H. Tabata, M. Tanaka, S. Ohya, “Reduction of the magnetic dead layer and observation of tunneling magnetoresistance in La0.67Sr0.33MnO3-based heterostructures with a LaMnO3 layer.” Appl. Phys. Lett. 110, 212406 (2017).DOI: 10.1063/1.4984297

  40. H. Terada, S. Ohya, L. D. Anh, Y. Iwasa, M. Tanaka, Magnetic anisotropy control by applying an electric field to the side surface of ferromagnetic films. Scientific Reports 7, 5618 (2017).

  41. S. Ohya, A. Yamamoto, T. Yamaguchi, R. Ishikawa, R. Akiyama, L. D. Anh, S. Goel, Y. K. Wakabayashi, S. Kuroda, and M. Tanaka, Observation of the inverse spin Hall effect in the topological crystalline insulator SnTe using spin pumping.” Phys. Rev. B 96, 094424 (2017).

  42. P. N. Hai, D. Maruo, L. D. Anh, and M. Tanaka, Visible-light emission at room temperature in Mn-doped Si light-emitting diodes. Phys. Rev. B 93, 094423/1-6 (2016).

  43.  S. Sakamoto, L. D. Anh, P. N. Hai, G. Shibata, Y. Takeda, M. Kobayashi, Y. Takahashi, T. Koide, M. Tanaka, and A. Fujimori, “Magnetization process of the n-type ferromagnetic semiconductor (In,Fe)As:Be studied by x-ray magnetic circular dichroism.” Phys. Rev. B93, 035203/1-6 (2016)

  44. N. T. Tu, P. N. Hai, L. D. Anh, M. Tanaka, High-temperature ferromagnetism in heavily Fe-doped ferromagnetic semiconductor (Ga,Fe)Sb. Appl. Phys. Lett. 108, 192401 (2016). *Selected as Featured Article in Applied Physics Letters. 👉AIP Publishing in the News: Best of Both Worlds: Ferromagnetism + Semiconductor = Spintronics: New Opportunities for Improving Electronics”

  45. L. D. Anh, P. N. Hai, M. Tanaka, “Observation of spontaneous spin-splitting in the band structure of an n-type zinc-blende ferromagnetic semiconductor”. Nature Communications 7, 13810(2016). 👉Press release (Japanese): スピン自由度を用いた次世代半導体デバイス実現へ大きな進展 ~強磁性半導体において大きなスピン分裂をもつ電子のエネルギー状態を初めて観測~

  46. L. D. Anh, D. Kaneko, P. N. Hai, M. Tanaka, “Growth and characterization of insulating ferromagnetic semiconductor (Al,Fe)Sb”. Appl. Phys. Lett.107, 232405 (2015).

  47. L. D. Anh, P. N. Hai, Y. Kasahara, Y. Iwasa, M. Tanaka, “Modulation of ferromagnetism in (In,Fe)As quantum wells via electrically controlled deformation of the electron wavefunctions”. Phys. Rev. B 92, 161201(R)(2015).

  48.  N. T. Tu, P. N. Hai, L. D. Anh, M. Tanaka, “Magnetic properties and intrinsic ferromagnetism in (Ga,Fe)Sb ferromagnetic semiconductor. Phys. Rev. B 92, 144403 (2015).

  49.  M. Kobayashi, L. D. Anh, P. N. Hai, Y. Takeda, S. Sakamoto, T. Kadono, T. Okane, Y. Saitoh, H. Yamagami, Y. Harada, M. Oshima, M. Tanaka and A. Fujimori, Spin and orbital magnetic moments of Fe in the n-type ferromagnetic semiconductor (In,Fe)As. Appl. Phys. Lett. 105, 032403/1-4 (2014).

  50. N. T. Tu, P. N. Hai, L. D. Anh, M. Tanaka, (Ga,Fe)Sb: A p-type ferromagnetic semiconductor. Appl. Phys. Lett.105, 132402/1-4 (2014).

  51. L. D. Anh, P. N. Hai, M. Tanaka, Control of ferromagnetism by manipulating the carrier wavefunction in n-type ferromagnetic semiconductor (In,Fe)As quantum wells. Appl. Phys. Lett, 104, 046404 (2014).

  52. N. T. Tu, L. D. Anh, P. N. Hai, M. Tanaka, Epitaxial Growth and Characterization of n-type Magnetic Semiconductor (In,Co)As.”Jpn. J. Appl. Phys.53, pp.04EM05/1-5 (2014).

  53. D. Sasaki, D., L. D. Anh, P. N. Hai, M. Tanaka,Interplay between strain, quantum confinement, and ferromagnetism in strained ferromagnetic semiconductor (In,Fe)As thin films.Appl. Phys. Lett, 104, 142406 (2014).

  54. P. N. Hai, D. Sasaki, L. D. Anh, M. Tanaka, Crystalline anisotropic magnetoresistance with two-fold and eight-fold symmetry in (In,Fe)As ferromagnetic semiconductor.Appl. Phys. Lett. 100, 262409 (2012).

  55. P. N. Hai, L. D. Anh, M. Tanaka, Electron effective mass in n-type electron-induced ferromagnetic semiconductor (In,Fe)As: Evidence of conduction band transport. Appl. Phys. Lett.101, 252410 (2012)

  56. P. N. Hai, L. D. Anh, S. Mohan, T. Tamegai, M. Kodzuka, T. Ohkubo, K. Hono, M. Tanaka, “Growth and characterization of n-type electron-induced ferromagnetic semiconductor (In,Fe)As. Appl. Phys. Lett 101, 182403 (2012).

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