スピン1/2のカゴメ格子反強磁性体の基底状態と磁気励起

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タイトル別名
  • Ground State and Magnetic Excitations of Spin-1/2 Kagome Antiferromagnets
  • スピン 1/2 ノ カゴメ ゴウシ ハン キョウジセイタイ ノ キテイ ジョウタイ ト ジキレイキ

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<p>Ground states and magnetic excitations of spin-1/2 kagomé antiferromagnets (KAF) A2Cu3SnF12 (A = Cs and Rb) were investigated by the magnetic measurements and neutron scattering experiments. For A = Cs, the system undergoes antiferromagnetic phase transition at TN = 20K. On the other hand, for A = Rb, non-magnetic “pinwheel” VBS state is realized at the ground state which is assisted by the lattice distortion to form an exchange network consisted of four different magnetic interactions. The contrasting ground states between two compounds should be caused by the difference of the lattice distortion.</p>

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  • 波紋

    波紋 23 (1), 25-28, 2013

    日本中性子科学会

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