Magnetic property control of GaN dilute magnetic semiconductors

2011 Fiscal Year Final Research Report

• Project/Area Number: 20760013
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Applied materials science/Crystal engineering
• Research Institution: Kyoto Institute of Technology
• Principal Investigator: SONODA Saki 京都工芸繊維大学, 工芸科学研究科, 准教授 (30397690)
• Project Period (FY): 2008 – 2011
• Keywords: スピンエレクトロニクス / MBE・エピタキシャル / 磁性 / 半導体物性 / 電子・電気材料

Research Abstract

Band structure of 3d-transition metal doped III-nitrides have been investigated by using optical absorption and photoelectron yield spectroscopies. It was found that new energy states are formed in the intrinsic band gaps of GaN upon the 3d transition metal doping. Charge transport properties as a function of electrode metal work function indicate that carriers in the materials move in the new band and are consistent with the band structure deduced from the spectroscopic analyses.

Research Products

• [Journal Article] Partially filled intermediate band of Cr-doped GaN films (2012)
  • Author(s): S. Sonoda
  • Journal Title: Appl. Phys. Lett Volume: 100 Pages: 202101-1-4
  • DOI: DOI:10.1063/1.4717716
  • Peer Reviewed
• [Journal Article] Role of Hydrogen on Room Temperature Ferromagnetism of GaMnN Films (2008)
  • Author(s): S. Sonoda
  • Journal Title: J. Phys., Condens. Matter Volume: 20 Pages: 475201-475204
  • DOI: DOI:10.1088/0953-8984/20/47/475201
  • Peer Reviewed
• [Presentation] (2011)
  • Author(s): 園田早紀
  • Organizer: 平成23年度神戸大学物性実験研究室セミナー(招待講演)
  • Place of Presentation: 神戸大学(兵庫県)
  • Year and Date: 2011-12-10
• [Presentation] 3d遷移金属添加窒化物半導体のイオン化ポテンシャル (2010)
  • Author(s): 園田早紀
  • Organizer: 第71回応用物理学会学術講演会
  • Place of Presentation: 長崎大学(長崎県)
  • Year and Date: 2010-09-15
• [Presentation] 3d遷移金属添加窒化物半導体の光吸収特性 (2010)
  • Author(s): 園田早紀
  • Organizer: 第71回応用物理学会学術講演会
  • Place of Presentation: 長崎大学(長崎県)
  • Year and Date: 2010-09-15
• [Presentation] Mn添加GaNのバンド構造と常磁性-強磁性可逆転移 (2009)
  • Author(s): 園田早紀
  • Organizer: 第39回結晶成長国内会議(招待講演)
  • Place of Presentation: 名古屋大学(愛知県)
  • Year and Date: 2009-11-13
• [Presentation] Mn添加GaN薄膜の交流電気伝導特性 (2009)
  • Author(s): 園田早紀、藤本佳久、濱中力、村野友昭、吉本昌弘、竹内徹也
  • Organizer: 日本金属学会2009年春期(第144回)大会
  • Place of Presentation: 東京工業大学(神奈川県)
  • Year and Date: 2009-03-29
• [Presentation] (2009)
  • Author(s): 園田早紀
  • Organizer: 日本化学会第92回春季年会(招待講演)
  • Place of Presentation: 慶應義塾大学(神奈川県)
  • Year and Date: 2009-03-25