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arXiv 0910.0288cond-mat.str-elcond-mat.supr-con
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NMR研究CeCoIn $_5$的场致磁性

NMR Studies of Field Induced Magnetism in CeCoIn$_5$

N. J. Curro, B. -L. Young, R. R. Urbano, M. J. Graf

摘要:

最近的核磁共振和弹性中子散射实验已经最终揭示了静态无公度磁性在场诱导的B相的CeCoIn 5的存在。我们分析了NMR数据,假设超精细耦合到In(2)核是各向异性的,并模拟了几种不同的磁结构的光谱。NMR数据与沿[001]方向的有序Ce矩一致,但对无公度波矢量的方向相对不敏感。

英文摘要:

Recent Nuclear Magnetic Resonance and elastic neutron scattering experiments have revealed conclusively the presence of static incommensurate magnetism in the field-induced B phase of CeCoIn5. We analyze the NMR data assuming the hyperfine coupling to the In(2) nuclei is anisotropic and simulate the spectra for several different magnetic structures. The NMR data are consistent with ordered Ce moments along the [001] direction, but are relatively insensitive to the direction of the incommensurate wavevector.

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