Magnetic impurity effect on superconductivity and Kondo temperature in ultrathin Pb films with adsorbed 3d transition metal atoms

被引：0
|
作者：
Mori, Yuichi [1 ]
Tashiro, Shotaro [1 ]
Masutomi, Ryuichi [1 ]
Okamoto, Tohru [1 ]
机构：
[1] Univ Tokyo, Dept Phys, 7-3-1 Hongo,Bunkyo ku, Tokyo 1130033, Japan
来源：
PHYSICAL REVIEW B | 2025年 / 111卷 / 01期
关键词：
SCATTERING;
D O I：
10.1103/PhysRevB.111.014504
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Suppression of the superconducting transition temperature by magnetic adatoms is studied for a-few-atomiclayer-thick Pb films grown on a cleaved GaAs(110) surface. The normalized suppression rate eta varies greatly with the spin S of the adatom. Furthermore, we find that eta is strongly enhanced by a coating with Au or Ag on the Pb film. On the basis of calculations using the Matsuura, Ichinose, and Nagaoka theory of the Kondo effect in superconductors, the results are explained by a strong negative S dependence of the Kondo temperature TK and a reduction of TK due to the coating.
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页数：5
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