ABSENCE OF SIZE DEPENDENCE OF THE KONDO RESISTIVITY

被引:75
作者
CHANDRASEKHAR, V [1 ]
SANTHANAM, P [1 ]
PENEBRE, NA [1 ]
WEBB, RA [1 ]
VLOEBERGHS, H [1 ]
VANHAESENDONCK, C [1 ]
BRUYNSERAEDE, Y [1 ]
机构
[1] KATHOLIEKE UNIV LEUVEN, VASTE STOF FYS MAGNETISME LAB, B-3001 LOUVAIN, BELGIUM
关键词
D O I
10.1103/PhysRevLett.72.2053
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have measured the low temperature resistivity of AuFe wires in the dilute magnetic impurity limit as a function of wire width, temperature, and magnetic field. When the width dependence of the electron-electron interaction contribution to the resistivity is taken into account, the temperature dependence of the remaining Kondo contribution to the resistivity of all samples with the same impurity concentration is identical. Similar behavior is observed for the magnetic field dependent resistivity. Thus, the Kondo contribution to the resistivity is independent of width down to 38 nm, much smaller than the Kondo length xi(K) = HBARupsilon(F)/k(B)T(K) almost-equal-to 10 mum.
引用
收藏
页码:2053 / 2056
页数:4
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