Abnormal drop in electrical resistivity with impurity doping of single-crystal Ag

作者：Kim Ji Young; Oh Min Wook; Lee Seunghun; Cho Yong Chan; Yoon Jang Hee; Lee Geun Woo; Cho Chae Ryong; Park Chul Hong p^*; Jeong Se Young

来源：Scientific Reports, 2014, 4(1): 5450.

DOI：10.1038/srep05450

Resistivity is an intrinsic feature that specifies the electrical properties of a material and depends on electron-phonon scattering near room temperature. Reducing the resistivity of a metal to its potentially lowest value requires eliminating grain boundaries and impurities, but to date few studies have focused on reducing the intrinsic resistivity of a pure metal itself. We could reduce the intrinsic resistivity of single-crystal Ag, which has an almost perfect structure, by impurity doping it with Cu. This paper presents our results: resistivity was reduced to 1.35 mu Omega.cm at room temperature after 3 mol% Cu-doping of single-crystal Ag. Various mechanisms were examined in an attempt to explain the abnormal behavior.

• 出版日期2014-6-26