New magnetoelectric effect and nuclear spin manupulation in elemental tellurium

• Project/Area Number: 15K13524
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics II
• Research Institution: Tokyo University of Science
• Principal Investigator: Itou Tetsuaki 東京理科大学, 理学部第一部応用物理学科, 准教授 (50402748)
• Co-Investigator(Kenkyū-buntansha): 小林 夏野 岡山大学, 異分野基礎科学研究所, 准教授 (60424090)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 電気磁気効果 / 電流誘起磁性 / スピン偏極電流 / 磁性 / 非従来型電気磁気効果

Outline of Final Research Achievements

The magnetoelectric effect (electric/magnetic stimulus generates magnetic/electric response) in bulk matter is of growing interest both fundamentally and technologically. This effect has been studied intensively in multiferroic materials. We have discovered a new class of bulk magnetoelectric phenomenon, which is fundamentally distinct from that in multiferroic materials. We have demonstrated experimentally that in elemental tellurium, bulk magnetization is induced parallel to an applied current, which is quite beyond classical electromagnetism and the current framework for magnetoelectricity in multiferroic materials.

Research Products

• [Presentation] 反転対称性の破れた単体Teにおける電流誘起磁性の圧力効果 (2017)
  • Author(s): 古川哲也, 安井貴敏, 土岐勇人, 渡邉悠太, 大堀健城, 上野哲平, 小林夏野, 伊藤哲明
  • Organizer: 日本物理学会 第72回年次大会
  • Place of Presentation: 大阪大学、大阪府
  • Year and Date: 2017-03-17
• [Presentation] 単結晶Teにおけるパルス電流下NMR測定による電流誘起磁性の検出 (2016)
  • Author(s): 下川裕理, 安井貴敏, 古川哲也, 宮川宣明, 伊藤哲明, 小林夏野, 徳永将史
  • Organizer: 日本物理学会 第71回年次大会
  • Place of Presentation: 東北学院大(宮城県仙台市）
  • Year and Date: 2016-03-19
• [Presentation] 単体Teのパルス電流下NMR測定 (2015)
  • Author(s): 下川裕理, 生井沢智之, 山本陸, 古川哲也, 伊藤哲明, 小林夏野, 徳永将史
  • Organizer: 日本物理学会，2015年秋季大会
  • Place of Presentation: 関西大学(大阪府吹田市)
  • Year and Date: 2015-09-16