Noise can be a unique probe of electron-electron-electron correlations in nanoscale electron devices. Whilestationary or small signal transport can often be simplyunderstood in terms of single particle behaviour, noise can beextremely sensitive to many-body effects (Landauer L 1996 Physica B227 156).We present a new collective phenomenon emerging in electrontransport in a resonant tunneling diode, due to Coulombrepulsion dramatically magnified by the particular shape of thedensity of states in the quantum well. This phenomenon, forwhich the name of Coulomb breach is proposed, reveals itself bymaking shot noise several times greater than that expected in theabsence of correlated electron motion. Experimental resultsshowing shot noise enhancement of a factor 6.6 are reported.
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机译：噪声可能是纳米级电子设备中电子-电子-电子相关性的独特探针。虽然就单个粒子的行为而言，固定或小信号传输通常可以被简单地理解，但是噪声对多体效应可能极其敏感（Landauer L 1996 Physica B227 156）。量子阱中态的密度的特定形状极大地放大了库仑勃勒效应。提出了库仑突破的名称的这种现象通过使散粒噪声比在没有相关电子运动的情况下预期的散粒噪声大几倍而暴露出来。实验结果表明，散粒噪声增强了6.6倍。
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