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首页> 外文期刊>Physica, B. Condensed Matter >Inhomogeneous magnetism in URu2Si2 studied by muon spin relaxation under high pressure
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Inhomogeneous magnetism in URu2Si2 studied by muon spin relaxation under high pressure

机译：介子自旋弛豫在高压下研究URu2Si2中的不均匀磁性

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摘要

We have studied the low-temperature phase below 17.5 K in the heavy-fermion superconductor URu2Si2 using the zero-field muSR technique under hydrostatic pressures P up to 0.85 GPa. The measurements qualitatively confirm the previous results of NMR and neutron scattering that pressure induces unusual evolution of an inhomogeneous antiferromagnetic (AF) phase which spatially competes with some nonmagnetic 'hidden order'. The AF volume fraction, however, develops abruptly at around a pressure of 0.6 GPa, in contrast to the P-linear variations in the NMR results. Moreover, the onset temperature of the AF-volume evolution is clearly lower than 17.5 K, whereas the nominal Neel temperature seems to be about 20 K. These experimental results suggest that the AF phase exists as a metastable state. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 23]
机译：我们已经使用零场muSR技术在高达0.85 GPa的静水压力P下研究了重金属费米超导体URu2Si2中低于17.5 K的低温相。这些测量定性地证实了NMR和中子散射的先前结果，即压力会引起不均匀反铁磁（AF）相的异常演化，该反铁相在空间上与某些非磁性“隐藏级”竞争。然而，与NMR结果的P线性变化相反，AF体积分数在0.6 GPa的压力下突然发展。此外，AF体积演化的起始温度明显低于17.5 K，而名义Neel温度似乎约为20K。这些实验结果表明，AF相以亚稳态存在。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：23]

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