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arXiv 1901.01563cond-mat.str-el
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极压下Sm金属的磁有序增强

Enhanced magnetic ordering in Sm metal under extreme pressure

Y. Deng, J. S. Schilling

摘要:

Sm金属的磁有序温度的依赖性,确定通过四点电阻率测量高达150 GPa的压力。在85 GPa以上,观察到To随压力的强烈增加。在此压力范围内,Sm离子在稀浓度下与超导Y合金化,表现出巨大的近藤对破缺。两者合计,这些结果表明,在85 GPa以上的压力Sm是在一个高度相关的电子状态,像近藤晶格,具有异常高的值。与以前在Nd、Tb和Dy及其含超导Y的稀磁合金中得到的类似结果作了详细的比较。

英文摘要:

The dependence of the magnetic ordering temperature To of Sm metal was determined through four-point electrical resistivity measurements to pressures as high as 150 GPa. A strong increase in To with pressure is observed above 85 GPa. In this pressure range Sm ions alloyed in dilute concentration with superconducting Y exhibit giant Kondo pair breaking. Taken together, these results suggest that for pressures above 85 GPa Sm is in a highly correlated electron state, like a Kondo lattice, with an unusually high value of To. A detailed comparison is made with similar results obtained earlier on Nd, Tb and Dy and their dilute magnetic alloys with superconducting Y.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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