Dynamic Nuclear Polarization in a Quantum Hall Corbino Disk

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Dynamic polarization of nuclear spins is studied in a Corbino disk under a breakdown regime of the quantum Hall effect (QHE). Since the edge channels are completely absent in the Corbino disk, we conclude that the electric current flowing in the bulk channel of a quantum Hall conductor is relevant to dynamic nuclear polarization (DNP). A pump and probe measurement demonstrates that DNP emerges near the critical voltage of the QHE breakdown. The agreement of the onset voltage of DNP with that of the QHE breakdown indicates that the underlying origin of DNP is closely related to that of the QHE breakdown.

収録刊行物

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 77(2), "23710-1"-"23710-3", 2008-02-15

    一般社団法人日本物理学会

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各種コード

  • NII論文ID(NAID)
    110006613878
  • NII書誌ID(NCID)
    AA00704814
  • 本文言語コード
    ENG
  • 資料種別
    SHO
  • ISSN
    00319015
  • NDL 記事登録ID
    9377392
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A404
  • データ提供元
    CJP書誌  NDL  NII-ELS 
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