Universality of the 1/3 shot-noise suppression factor in nondegenerate diffusive conductors

被引：63

作者：

Gonzalez, T

Gonzalez, C

Mateos, J

Pardo, D

Reggiani, L

Bulashenko, OM

Rubi, JM

机构：

[1] Univ Salamanca, Dept Fis Aplicada, E-37008 Salamanca, Spain

[2] Univ Lecce, Dipartimento Sci Mat, Ist Nazl Fis Mat, I-73100 Lecce, Italy

[3] Univ Barcelona, Dept Fis Fonamental, E-08028 Barcelona, Spain

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.80.2901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Shot-noise suppression is investigated in nondegenerate diffusive conductors by means of an ensemble Monte Carlo simulator. The universal 1/3 suppression value is obtained when transport occurs under elastic collision regime provided the following conditions are satisfied: (i) The applied voltage is much larger than the thermal value; (ii) the length of the device is much greater than both the elastic mean free path and the Debye length. By fully suppressing carrier-number fluctuations, long-range Coulomb interaction is essential to obtain the 1/3 value in the low-frequency limit.

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页码：2901 / 2904

页数：4

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