Exotic behaviors of spin dimers in quantum ferrimagnet Cu<SUB>2</SUB>Fe<SUB>2</SUB>Ge<SUB>4</SUB>O<SUB>13</SUB>

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  • Masuda Takatsugu
    International Graduate Schools of Arts and Sciences, Yokohama City University

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Other Title
  • 量子フェリ磁性体Cu<SUB>2</SUB>Fe<SUB>2</SUB>Ge<SUB>4</SUB>O<SUB>13</SUB>におけるスピン・ダイマーのエキゾチックなふるまい
  • ジュショウ キジ リョウシ フェリ ジセイタイ Cu2Fe2Ge4O13 ニ オケル スピン ダイマー ノ エキゾチックナ フルマイ サイキン ノ チュウセイシ サンラン ジッケン ニ ヨル リョウシ スピンケイ ノ ケンキュウ カラ
  • From recent neutron scattering study in quantum spin systems
  • 最近の中性子散乱実験による量子スピン系の研究から

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Abstract

Comprehensive study by neutron scattering technique in a weakly coupled quantum dimers and classical chains compound Cu2Fe2Ge4O13is reported. Thorough survey of the spin dynamics in four dimensional k-E space by triple axis spectrometer reveals that the dimer behaves as a media that transfers exchange integrals from one Fe spin to another. The obtained effective parameter of the indirect magnetic interaction is totally consistent with that estimated by static measurements including neutron diffraction and magnetic susceptibility measurement.

Journal

  • hamon

    hamon 18 (3), 146-150, 2008

    The Japanese Society for Neutron Science

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