Magnetic-field induced transition to the 1/2 magnetization plateau state in the geometrically frustrated magnet CdCr2O4.
作者： Hiroaki Ueda , Hiroko Aruga Katori , Hiroyuki Mitamura , Tsuneaki Goto , Hidenori Takagi
DOI: 10.1103/PHYSREVLETT.94.047202
关键词: Plateau (mathematics) 、 Physics 、 Ferromagnetism 、 Spins 、 Spin states 、 Spin (physics) 、 Frustration 、 Magnetization 、 Condensed matter physics 、 Metamagnetism
摘要: The magnetization of the geometrically frustrated spinel C d C r 2 O 4 was measured in pulsed fields of up to 47 T. We found a metamagnetic transition to a very wide magnetization plateau state with one half of the full moment of S= 3/2 C r 3+ at 28 T, independent of the field direction. This is the first observation of magnetization plateau state realized in Heisenberg pyrochlore magnet. The plateau state can be ascribed to a collinear spin configuration with three-up and one-down spins out of four spins of each Cr tetrahedron. A …
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