Meir Yigal, Golub Anatoly
Physics Department, Ben Gurion University, Beer Sheva 84105, Israel.
Phys Rev Lett. 2002 Mar 18;88(11):116802. doi: 10.1103/PhysRevLett.88.116802. Epub 2002 Mar 4.
The shot noise in the current through a quantum dot is calculated as a function of voltage from the high-voltage Coulomb-blockaded regime to the low-voltage Kondo regime. Using several complementary approaches, it is shown that the zero-frequency shot noise (scaled by the voltage) exhibits a nonmonotonic dependence on voltage, with a peak around the Kondo temperature. Beyond giving a good estimate of the Kondo temperature, it is shown that the shot noise yields additional information on the effects of electronic correlations on the local density of states in the Kondo regime, unaccessible in traditional transport measurements.
通过量子点的电流中的散粒噪声作为电压的函数进行计算，范围从高电压库仑阻塞区到低电压近藤区。使用几种互补方法表明，零频散粒噪声（按电压缩放）对电压呈现非单调依赖性，在近藤温度附近出现峰值。除了能很好地估计近藤温度外，还表明散粒噪声能提供关于电子关联对近藤区局域态密度影响的额外信息，而这在传统输运测量中是无法获得的。
