金属螺旋形变磁体中的巨磁弹性耦合
Giant magneto-elastic coupling in a metallic helical metamagnet
摘要：
使用高分辨率的中子衍射和电容法，我们表明，热演化的helmagnetic状态在CoMnSi是伴随着原子间距离的变化高达2%，有史以来最大的金属磁体。我们的研究结果和图片的竞争交换和强烈的各向异性热膨胀，我们用来了解他们揭示了一个新的机制，大磁弹性效应，不需要大的自旋轨道耦合。
英文摘要：
Using high resolution neutron diffraction and capacitance dilatometry we show that the thermal evolution of the helimagnetic state in CoMnSi is accompanied by a change in inter-atomic distances of up to 2%, the largest ever found in a metallic magnet. Our results and the picture of competing exchange and strongly anisotropic thermal expansion that we use to understand them sheds light on a new mechanism for large magnetoelastic effects that does not require large spin-orbit coupling.
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