Magnetism and heavy fermions in YbRhSn and YbPtSn

被引：19

作者：

Andraka, B

Pietri, R

Kaczorowski, D

Leithe-Jasper, A

Rogl, P

机构：

[1] Univ Florida, Dept Phys, Gainesville, FL 32611 USA

[2] Polish Acad Sci, W Trzebiatowski Inst Low Temp & Struct Res, PL-50950 Wroclaw 2, Poland

[3] Univ Vienna, Inst Phys Chem, A-1090 Vienna, Austria

来源：

JOURNAL OF APPLIED PHYSICS | 2000年 / 87卷 / 09期

关键词：

D O I：

10.1063/1.373278

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Isostructural YbRhSn and YbPtSn were studied by specific heat, electrical resistivity, and magnetoresistance. Both compounds order antiferromagnetically below 2 and 3.5 K, respectively. Above 4 K, they display a number of remarkable similarities including Kondo-like resistivity and large negative magnetoresistance. Scaling analysis of this magnetoresistance shows that it is due to the suppression of Kondo scattering in YbRhSn but has a ferromagnetic spin fluctuation character in YbPtSn. The heavy fermion state was confirmed in YbRhSn by low temperature specific heat measurements yielding gamma of about 1200 mJ/K-2 mol. gamma for YbPtSn is of order 100 mJ/K-2 mol only. (C) 2000 American Institute of Physics. [S0021-8979(00)90108-7].

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页码：5149 / 5151

页数：3

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